Why Is My Period Late but I’m Not Pregnant ? Causes, Symptoms, and When to See a Doctor

A late period can be stressful, especially when pregnancy has already been ruled out. If your menstrual cycle is usually predictable and your period suddenly arrives several days or weeks late, you may wonder, “Why is my period late but I’m not pregnant?”

Pregnancy is one of the most common reasons for a missed period, but it is certainly not the only one. Stress, changes in weight, intense exercise, hormonal birth control, polycystic ovary syndrome (PCOS), thyroid disorders, elevated prolactin, perimenopause, and other health conditions can all affect ovulation and delay menstruation.

A single late period is often not a medical emergency. However, repeated or prolonged missed periods can sometimes indicate an underlying hormonal or reproductive health problem that deserves evaluation.

What Does a “Late Period” Mean?

Menstrual cycles naturally vary. Your period does not necessarily have to arrive on exactly the same calendar date every month.

A period becomes more clinically significant when your normal menstrual pattern changes substantially or menstruation stops for an extended period. The American College of Obstetricians and Gynecologists (ACOG) defines secondary amenorrhea as not having a period for three months or more in someone who previously menstruated.

The American Society for Reproductive Medicine (ASRM) similarly recommends evaluation when menstruation has been absent for more than three months in someone with previously regular cycles, or for six months in someone whose cycles were already irregular.

So, if you are only a few days late, there may be no serious problem. But if missed periods keep happening, it is worth finding out why.

1. Stress Can Delay Your Period

One of the most common explanations for a late period is stress.

Your menstrual cycle is controlled by a complex interaction between the brain, pituitary gland, ovaries, and reproductive hormones. Significant psychological or physical stress can interfere with the hormonal signals responsible for ovulation.

When ovulation occurs later than usual—or does not occur during a particular cycle—your period can also be delayed.

Stress-related menstrual changes may occur during periods of:

• Emotional distress
• Work or school pressure
• Relationship problems
• Major life changes
• Poor sleep
• Significant anxiety
• Intense physical training
• Inadequate food intake

The Endocrine Society recognizes psychological stress and energy imbalance as important contributors to functional hypothalamic amenorrhea, a condition in which hormonal signaling from the brain to the ovaries becomes disrupted.

Reducing stress, getting adequate nutrition, sleeping sufficiently, and avoiding excessive exercise may help restore normal cycles when stress or energy imbalance is responsible.

2. Weight Loss or Weight Gain Can Affect Your Menstrual Cycle

A significant change in body weight can influence reproductive hormones.

Rapid weight loss, restrictive dieting, insufficient calorie intake, or very low body fat can interfere with the hormonal signals needed for ovulation. ACOG lists low body weight, rapid weight loss and eating disorders among possible causes of secondary amenorrhea.

On the other hand, being overweight can also contribute to menstrual irregularity, particularly when it is associated with insulin resistance or PCOS. The NHS lists both sudden weight loss and being overweight among common causes of late or missed periods.

This does not mean that every person with a higher or lower body weight will have irregular periods. Menstrual health depends on multiple factors, including genetics, hormones, nutrition, metabolic health, and individual physiology.

3. Polycystic Ovary Syndrome (PCOS)

Polycystic ovary syndrome, commonly called PCOS, is another important cause of irregular or missed periods.

PCOS can interfere with regular ovulation. Some women with PCOS have long menstrual cycles, unpredictable periods, or periods that disappear for months at a time.

Other possible signs include:

• Acne
• Increased facial or body hair
• Hair thinning
• Difficulty becoming pregnant
• Weight changes
• Signs of insulin resistance

Not everyone with PCOS experiences all of these symptoms.

If your period is frequently late and you also notice increased facial hair, persistent acne, unexplained changes in weight, or difficulty predicting ovulation, discussing PCOS with a healthcare professional may be appropriate.

ASRM identifies PCOS among the major causes that should be considered when evaluating secondary amenorrhea.

4. Thyroid Problems Can Cause a Late Period

Your thyroid gland plays an important role in metabolism and hormonal regulation. Both an underactive thyroid (hypothyroidism) and an overactive thyroid (hyperthyroidism) can affect menstrual cycles.

Possible symptoms of thyroid dysfunction vary but can include:

• Fatigue
• Changes in weight
• Feeling unusually cold or hot
• Changes in heart rate
• Hair or skin changes
• Mood changes
• Menstrual irregularity

Importantly, menstrual irregularity can sometimes occur even when classic thyroid symptoms are not obvious.

For this reason, thyroid-stimulating hormone (TSH) testing is commonly included in the evaluation of unexplained menstrual abnormalities. ASRM recommends checking TSH in women with menstrual abnormalities because thyroid disorders can cause chronic anovulation and amenorrhea.

5. Elevated Prolactin Levels

Prolactin is a hormone produced by the pituitary gland. It is best known for its role in breast milk production, but abnormal prolactin levels can also interfere with reproductive hormones.

High prolactin levels may cause:

• Irregular periods
• Missed periods
• Difficulty becoming pregnant
• Breast milk production when not breastfeeding

Interestingly, not every person with elevated prolactin has breast discharge. ASRM notes that the absence of galactorrhea does not reliably exclude hyperprolactinemia.

Certain medications and medical conditions can influence prolactin levels. If testing repeatedly shows elevated prolactin, a doctor may investigate the pituitary gland and other possible causes.

6. Intense Exercise May Make Your Period Late

Regular exercise is generally beneficial for health, but very high levels of physical activity combined with inadequate energy intake can disrupt menstrual function.

This is particularly relevant for athletes, dancers, runners, and people following highly restrictive diets.

The Endocrine Society describes functional hypothalamic amenorrhea as a condition associated with energy deficiency and/or stress. Treatment focuses on correcting the underlying energy imbalance, which may involve increasing calorie intake, improving nutrition, reducing excessive exercise, and addressing psychological stressors.

If you exercise heavily and your periods have become increasingly irregular, do not simply assume that missing periods is a normal consequence of fitness. Persistent menstrual suppression can have implications for bone health.

7. Hormonal Birth Control Can Change Your Period

Hormonal contraception can alter menstrual bleeding patterns.

Depending on the method, you may experience lighter periods, irregular bleeding, or no bleeding at all. The NHS lists hormonal contraceptive methods—including certain pills, injections, and intrauterine systems—as potential causes of missed or late periods.

Therefore, if you recently started, stopped, or changed hormonal birth control, your menstrual pattern may temporarily or persistently change.

However, contraception does not make pregnancy impossible in every circumstance. If pregnancy is biologically possible and your period is unexpectedly late, a pregnancy test may still be appropriate.

8. Perimenopause Can Cause Irregular Periods

For women approaching menopause, changing menstrual cycles may be caused by perimenopause, the transitional period before menopause.

During perimenopause, ovulation may become less predictable. Periods may become:

• Longer or shorter
• Heavier or lighter
• More frequent or less frequent
• Occasionally absent

The NHS identifies perimenopause, usually occurring between ages 45 and 55, as a common cause of late or missed periods.

Other symptoms can include hot flashes, night sweats, sleep problems, mood changes, and vaginal dryness.

9. Breastfeeding Can Stop or Delay Periods

After giving birth, menstruation may not return immediately. Breastfeeding can suppress ovulation through hormonal changes, meaning some breastfeeding women may go months without a period.

However, breastfeeding should not automatically be treated as contraception. Ovulation can occur before the first postpartum period, so pregnancy can still be possible.

10. Certain Medications and Medical Conditions

Some medications can affect menstrual cycles. ACOG notes that hormonal birth control and certain medical conditions can cause amenorrhea.

Other chronic illnesses may also influence menstrual function.

Because there are many possible causes of a late period, it is important not to diagnose yourself based on one symptom alone.

Could a Pregnancy Test Be Wrong?

If you believe you are definitely not pregnant because you received a negative pregnancy test, timing can still matter.

ASRM notes that false-negative urine pregnancy tests are possible and that blood testing for human chorionic gonadotropin (hCG) may be appropriate in certain clinical situations.

If your period is late and pregnancy is possible, consider discussing repeat testing with a healthcare professional, particularly if the first test was taken very early.

If pregnancy is completely excluded, attention can then turn toward other causes of menstrual irregularity.

When Should You See a Doctor About a Late Period?

A single late period does not necessarily mean that something is wrong.

However, medical evaluation is recommended when missed periods become persistent or are accompanied by other symptoms.

ACOG recommends evaluation when a previously menstruating woman has no period for more than three months without an explanation.

The NHS advises seeing a healthcare professional if you have missed three periods in a row or if irregular periods occur alongside symptoms such as significant weight changes, tiredness, facial hair growth, or changes affecting the skin.

You should also seek medical advice sooner if menstrual changes are accompanied by concerning symptoms such as severe pelvic pain, fainting, unusual bleeding, severe headaches, or vision changes.

How Doctors Diagnose a Missed Period

The evaluation depends on your age, medical history, menstrual pattern, medications, symptoms, and whether pregnancy is possible.

A healthcare professional may ask about:

• The date of your last period
• Your usual cycle length
• Recent stress
• Weight changes
• Exercise
• Diet
• Medications
• Hormonal contraception
• Pregnancy possibility
• Breastfeeding
• Symptoms of PCOS
• Thyroid symptoms
• Family medical history

Depending on the situation, testing may include a pregnancy test, thyroid testing, prolactin measurement, FSH and other reproductive hormones, and sometimes pelvic ultrasound.

ASRM recommends pregnancy exclusion and commonly includes TSH, prolactin, and reproductive hormone assessment in the evaluation of secondary amenorrhea. Mayo Clinic similarly describes pregnancy testing, thyroid testing, ovarian hormone testing, prolactin testing, and imaging as possible components of evaluation depending on the suspected cause.

Can You Make Your Period Come Faster?

There is no universally safe home remedy that can reliably make a late period start immediately.

The right approach depends on why your period is late.

If stress or inadequate nutrition is contributing, improving sleep, eating enough, reducing excessive exercise, and addressing stress may help. If PCOS, thyroid disease, elevated prolactin, or another hormonal condition is responsible, treatment should target the underlying problem.

Avoid taking hormonal medication or high-dose supplements simply to “bring on” a period without professional advice.

Treatment for amenorrhea varies considerably depending on the underlying cause.

Does a Late Period Mean You Are Infertile?

No.

Having an occasional late period does not automatically mean that you are infertile.

However, frequent irregular or absent periods can sometimes indicate that ovulation is not occurring regularly. Since ovulation is necessary for natural conception, identifying the cause of persistent menstrual irregularity can be important for people who are trying to become pregnant.

Conditions such as PCOS, thyroid disorders, hyperprolactinemia, and functional hypothalamic amenorrhea can affect ovulation, but many of these conditions can be managed once properly diagnosed.

Frequently Asked Questions

Why is my period 7 days late but I’m not pregnant?

A period that is one week late can happen because ovulation occurred later than usual. Stress, illness, travel, changes in sleep, weight changes, intense exercise, hormonal contraception, PCOS, and thyroid disorders are among the possible explanations. If pregnancy is possible, consider appropriate pregnancy testing before assuming another cause.

Why is my period 2 weeks late but the pregnancy test is negative?

A negative test may occur because pregnancy is not present, but timing can matter. If pregnancy remains possible, a healthcare professional can advise whether repeat urine testing or a blood hCG test is appropriate. If pregnancy is excluded, hormonal and lifestyle-related causes should be considered.

Can stress make your period late?

Yes. Significant psychological or physical stress can interfere with the hormonal signals involved in ovulation and may lead to delayed or absent menstruation.

Can PCOS cause a missed period?

Yes. PCOS can interfere with regular ovulation and is a recognized cause of irregular or absent periods.

When is a late period considered abnormal?

There is no single number of “late” days that applies to everyone. A cycle can naturally vary. However, persistent absence of menstruation is more concerning. ACOG recommends evaluation when menstruation has stopped for more than three months without explanation.

The Bottom Line

If your period is late but you are not pregnant, pregnancy is only one possible explanation—and there are many others.

Stress, weight changes, intense exercise, PCOS, thyroid disorders, elevated prolactin, hormonal contraception, breastfeeding, perimenopause, medications, and other medical conditions can all affect menstrual timing.

An occasional late period is often not serious. But if your periods repeatedly become irregular, disappear for several months, or are accompanied by symptoms such as major weight changes, excessive facial hair, severe pain, unusual bleeding, headaches, or vision changes, seek medical evaluation.Why Is My Period Late but I’m Not Pregnant? Causes, Symptoms, and When to See a Doctor

A late period can be stressful, especially when pregnancy has already been ruled out. If your menstrual cycle is usually predictable and your period suddenly arrives several days or weeks late, you may wonder, “Why is my period late but I’m not pregnant?”

Pregnancy is one of the most common reasons for a missed period, but it is certainly not the only one. Stress, changes in weight, intense exercise, hormonal birth control, polycystic ovary syndrome (PCOS), thyroid disorders, elevated prolactin, perimenopause, and other health conditions can all affect ovulation and delay menstruation.

A single late period is often not a medical emergency. However, repeated or prolonged missed periods can sometimes indicate an underlying hormonal or reproductive health problem that deserves evaluation.

What Does a “Late Period” Mean?

Menstrual cycles naturally vary. Your period does not necessarily have to arrive on exactly the same calendar date every month.

A period becomes more clinically significant when your normal menstrual pattern changes substantially or menstruation stops for an extended period. The American College of Obstetricians and Gynecologists (ACOG) defines secondary amenorrhea as not having a period for three months or more in someone who previously menstruated.

The American Society for Reproductive Medicine (ASRM) similarly recommends evaluation when menstruation has been absent for more than three months in someone with previously regular cycles, or for six months in someone whose cycles were already irregular.

So, if you are only a few days late, there may be no serious problem. But if missed periods keep happening, it is worth finding out why.

1. Stress Can Delay Your Period

One of the most common explanations for a late period is stress.

Your menstrual cycle is controlled by a complex interaction between the brain, pituitary gland, ovaries, and reproductive hormones. Significant psychological or physical stress can interfere with the hormonal signals responsible for ovulation.

When ovulation occurs later than usual—or does not occur during a particular cycle—your period can also be delayed.

Stress-related menstrual changes may occur during periods of:

• Emotional distress
• Work or school pressure
• Relationship problems
• Major life changes
• Poor sleep
• Significant anxiety
• Intense physical training
• Inadequate food intake

The Endocrine Society recognizes psychological stress and energy imbalance as important contributors to functional hypothalamic amenorrhea, a condition in which hormonal signaling from the brain to the ovaries becomes disrupted.

Reducing stress, getting adequate nutrition, sleeping sufficiently, and avoiding excessive exercise may help restore normal cycles when stress or energy imbalance is responsible.

2. Weight Loss or Weight Gain Can Affect Your Menstrual Cycle

A significant change in body weight can influence reproductive hormones.

Rapid weight loss, restrictive dieting, insufficient calorie intake, or very low body fat can interfere with the hormonal signals needed for ovulation. ACOG lists low body weight, rapid weight loss, and eating disorders among possible causes of secondary amenorrhea.

On the other hand, being overweight can also contribute to menstrual irregularity, particularly when it is associated with insulin resistance or PCOS. The NHS lists both sudden weight loss and being overweight among common causes of late or missed periods.

This does not mean that every person with a higher or lower body weight will have irregular periods. Menstrual health depends on multiple factors, including genetics, hormones, nutrition, metabolic health, and individual physiology.

3. Polycystic Ovary Syndrome (PCOS)

Polycystic ovary syndrome, commonly called PCOS, is another important cause of irregular or missed periods.

PCOS can interfere with regular ovulation. Some women with PCOS have long menstrual cycles, unpredictable periods, or periods that disappear for months at a time.

Other possible signs include:

• Acne
• Increased facial or body hair
• Hair thinning
• Difficulty becoming pregnant
• Weight changes
• Signs of insulin resistance

Not everyone with PCOS experiences all of these symptoms.

If your period is frequently late and you also notice increased facial hair, persistent acne, unexplained changes in weight, or difficulty predicting ovulation, discussing PCOS with a healthcare professional may be appropriate.

ASRM identifies PCOS among the major causes that should be considered when evaluating secondary amenorrhea.

4. Thyroid Problems Can Cause a Late Period

Your thyroid gland plays an important role in metabolism and hormonal regulation. Both an underactive thyroid (hypothyroidism) and an overactive thyroid (hyperthyroidism) can affect menstrual cycles.

Possible symptoms of thyroid dysfunction vary but can include:

• Fatigue
• Changes in weight
• Feeling unusually cold or hot
• Changes in heart rate
• Hair or skin changes
• Mood changes
• Menstrual irregularity

Importantly, menstrual irregularity can sometimes occur even when classic thyroid symptoms are not obvious.

For this reason, thyroid-stimulating hormone (TSH) testing is commonly included in the evaluation of unexplained menstrual abnormalities. ASRM recommends checking TSH in women with menstrual abnormalities because thyroid disorders can cause chronic anovulation and amenorrhea.

5. Elevated Prolactin Levels

Prolactin is a hormone produced by the pituitary gland. It is best known for its role in breast milk production, but abnormal prolactin levels can also interfere with reproductive hormones.

High prolactin levels may cause:

• Irregular periods
• Missed periods
• Difficulty becoming pregnant
• Breast milk production when not breastfeeding

Interestingly, not every person with elevated prolactin has breast discharge. ASRM notes that the absence of galactorrhea does not reliably exclude hyperprolactinemia.

Certain medications and medical conditions can influence prolactin levels. If testing repeatedly shows elevated prolactin, a doctor may investigate the pituitary gland and other possible causes.

6. Intense Exercise May Make Your Period Late

Regular exercise is generally beneficial for health, but very high levels of physical activity combined with inadequate energy intake can disrupt menstrual function.

This is particularly relevant for athletes, dancers, runners, and people following highly restrictive diets.

The Endocrine Society describes functional hypothalamic amenorrhea as a condition associated with energy deficiency and/or stress. Treatment focuses on correcting the underlying energy imbalance, which may involve increasing calorie intake, improving nutrition, reducing excessive exercise, and addressing psychological stressors.

If you exercise heavily and your periods have become increasingly irregular, do not simply assume that missing periods is a normal consequence of fitness. Persistent menstrual suppression can have implications for bone health.

7. Hormonal Birth Control Can Change Your Period

Hormonal contraception can alter menstrual bleeding patterns.

Depending on the method, you may experience lighter periods, irregular bleeding, or no bleeding at all. The NHS lists hormonal contraceptive methods—including certain pills, injections, and intrauterine systems—as potential causes of missed or late periods.

Therefore, if you recently started, stopped, or changed hormonal birth control, your menstrual pattern may temporarily or persistently change.

However, contraception does not make pregnancy impossible in every circumstance. If pregnancy is biologically possible and your period is unexpectedly late, a pregnancy test may still be appropriate.

8. Perimenopause Can Cause Irregular Periods

For women approaching menopause, changing menstrual cycles may be caused by perimenopause, the transitional period before menopause.

During perimenopause, ovulation may become less predictable. Periods may become:

• Longer or shorter
• Heavier or lighter
• More frequent or less frequent
• Occasionally absent

The NHS identifies perimenopause, usually occurring between ages 45 and 55, as a common cause of late or missed periods.

Other symptoms can include hot flashes, night sweats, sleep problems, mood changes, and vaginal dryness.

9. Breastfeeding Can Stop or Delay Periods

After giving birth, menstruation may not return immediately. Breastfeeding can suppress ovulation through hormonal changes, meaning some breastfeeding women may go months without a period.

However, breastfeeding should not automatically be treated as contraception. Ovulation can occur before the first postpartum period, so pregnancy can still be possible.

10. Certain Medications and Medical Conditions

Some medications can affect menstrual cycles. ACOG notes that hormonal birth control and certain medical conditions can cause amenorrhea.

Other chronic illnesses may also influence menstrual function.

Because there are many possible causes of a late period, it is important not to diagnose yourself based on one symptom alone.

Could a Pregnancy Test Be Wrong?

If you believe you are definitely not pregnant because you received a negative pregnancy test, timing can still matter.

ASRM notes that false-negative urine pregnancy tests are possible and that blood testing for human chorionic gonadotropin (hCG) may be appropriate in certain clinical situations.

If your period is late and pregnancy is possible, consider discussing repeat testing with a healthcare professional, particularly if the first test was taken very early.

If pregnancy is completely excluded, attention can then turn toward other causes of menstrual irregularity.

When Should You See a Doctor About a Late Period?

A single late period does not necessarily mean that something is wrong.

However, medical evaluation is recommended when missed periods become persistent or are accompanied by other symptoms.

ACOG recommends evaluation when a previously menstruating woman has no period for more than three months without an explanation.

The NHS advises seeing a healthcare professional if you have missed three periods in a row or if irregular periods occur alongside symptoms such as significant weight changes, tiredness, facial hair growth, or changes affecting the skin.

You should also seek medical advice sooner if menstrual changes are accompanied by concerning symptoms such as severe pelvic pain, fainting, unusual bleeding, severe headaches, or vision changes.

How Doctors Diagnose a Missed Period

The evaluation depends on your age, medical history, menstrual pattern, medications, symptoms, and whether pregnancy is possible.

A healthcare professional may ask about:

• The date of your last period
• Your usual cycle length
• Recent stress
• Weight changes
• Exercise
• Diet
• Medications
• Hormonal contraception
• Pregnancy possibility
• Breastfeeding
• Symptoms of PCOS
• Thyroid symptoms
• Family medical history

Depending on the situation, testing may include a pregnancy test, thyroid testing, prolactin measurement, FSH and other reproductive hormones, and sometimes pelvic ultrasound.

ASRM recommends pregnancy exclusion and commonly includes TSH, prolactin, and reproductive hormone assessment in the evaluation of secondary amenorrhea. Mayo Clinic similarly describes pregnancy testing, thyroid testing, ovarian hormone testing, prolactin testing, and imaging as possible components of evaluation depending on the suspected cause.

Can You Make Your Period Come Faster?

There is no universally safe home remedy that can reliably make a late period start immediately.

The right approach depends on why your period is late.

If stress or inadequate nutrition is contributing, improving sleep, eating enough, reducing excessive exercise, and addressing stress may help. If PCOS, thyroid disease, elevated prolactin, or another hormonal condition is responsible, treatment should target the underlying problem.

Avoid taking hormonal medication or high-dose supplements simply to “bring on” a period without professional advice.

Treatment for amenorrhea varies considerably depending on the underlying cause.

Does a Late Period Mean You Are Infertile?

No.

Having an occasional late period does not automatically mean that you are infertile.

However, frequent irregular or absent periods can sometimes indicate that ovulation is not occurring regularly. Since ovulation is necessary for natural conception, identifying the cause of persistent menstrual irregularity can be important for people who are trying to become pregnant.

Conditions such as PCOS, thyroid disorders, hyperprolactinemia, and functional hypothalamic amenorrhea can affect ovulation, but many of these conditions can be managed once properly diagnosed.

Frequently Asked Questions

Why is my period 7 days late but I’m not pregnant?

A period that is one week late can happen because ovulation occurred later than usual. Stress, illness, travel, changes in sleep, weight changes, intense exercise, hormonal contraception, PCOS, and thyroid disorders are among the possible explanations. If pregnancy is possible, consider appropriate pregnancy testing before assuming another cause.

Why is my period 2 weeks late but the pregnancy test is negative?

A negative test may occur because pregnancy is not present, but timing can matter. If pregnancy remains possible, a healthcare professional can advise whether repeat urine testing or a blood hCG test is appropriate. If pregnancy is excluded, hormonal and lifestyle-related causes should be considered.

Can stress make your period late?

Yes. Significant psychological or physical stress can interfere with the hormonal signals involved in ovulation and may lead to delayed or absent menstruation.

Can PCOS cause a missed period?

Yes. PCOS can interfere with regular ovulation and is a recognized cause of irregular or absent periods.

When is a late period considered abnormal?

There is no single number of “late” days that applies to everyone. A cycle can naturally vary. However, persistent absence of menstruation is more concerning. ACOG recommends evaluation when menstruation has stopped for more than three months without explanation.

The Bottom Line

If your period is late but you are not pregnant, pregnancy is only one possible explanation—and there are many others.

Stress, weight changes, intense exercise, PCOS, thyroid disorders, elevated prolactin, hormonal contraception, breastfeeding, perimenopause, medications, and other medical conditions can all affect menstrual timing.

An occasional late period is often not serious. But if your periods repeatedly become irregular, disappear for several months, or are accompanied by symptoms such as major weight changes, excessive facial hair, severe pain, unusual bleeding, headaches, or vision changes, seek medical evaluation.

Understanding why your period is late is more useful than simply trying to make it arrive. A healthcare professional can determine whether the cause is temporary or whether you need treatment for an underlying hormonal or reproductive health condition.

Medical disclaimer: This article is for general educational purposes and does not replace individualized medical advice, diagnosis, or treatment. If you have persistent menstrual changes or concerning symptoms, speak with a qualified healthcare professional.

Supporting Research and Medical Sources

Endocrine Society, Functional Hypothalamic Amenorrhea Clinical Practice Guideline.

American College of Obstetricians and Gynecologists (ACOG), Amenorrhea: Absence of Periods.

American Society for Reproductive Medicine (ASRM), Current Evaluation of Amenorrhea: A Committee Opinion (2024).

NHS, Missed or Late Periods.

Mayo Clinic, Amenorrhea: Symptoms and Causes.

Mayo Clinic, Amenorrhea: Diagnosis and Treatment.

Understanding why your period is late is more useful than simply trying to make it arrive. A healthcare professional can determine whether the cause is temporary or whether you need treatment for an underlying hormonal or reproductive health condition.

Medical disclaimer: This article is for general educational purposes and does not replace individualized medical advice, diagnosis, or treatment. If you have persistent menstrual changes or concerning symptoms, speak with a qualified healthcare professional.

Supporting Research and Medical Sources

1. American College of Obstetricians and Gynecologists (ACOG), Amenorrhea: Absence of Periods.
2. American Society for Reproductive Medicine (ASRM), Current Evaluation of Amenorrhea: A Committee Opinion (2024).
3. NHS, Missed or Late Periods.
4. Mayo Clinic, Amenorrhea: Symptoms and Causes.
5. Mayo Clinic, Amenorrhea: Diagnosis and Treatment.
6. Endocrine Society, Functional Hypothalamic Amenorrhea Clinical Practice Guideline.