Delayed Menstruation: Causes and What to Expect - Obstetrics and Gynecology

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Menstrual delay


Doctor, I would like to ask if it is normal that my last menstrual period was on January 22 and I still haven't gotten it.
What are the possible reasons for a delayed period? How much longer should I wait? I am feeling very anxious about it.

Niming, 10~19 year old female. Ask Date: 2023/02/27

Dr. Cao Guotao reply Obstetrics and Gynecology


Hello, I have responded to your question.
Wishing you good health.

Reply Date: 2023/02/27

More Info


Delayed menstruation can be a source of concern for many individuals, and understanding the potential causes and what to expect can help alleviate some anxiety. The menstrual cycle can be influenced by a variety of factors, and it's important to consider both physiological and lifestyle aspects that may contribute to a delay.

Firstly, a typical menstrual cycle ranges from 21 to 35 days, with an average of about 28 days. However, cycles can vary significantly from person to person and even from month to month. If your last period started on January 22 and you have not had a period since, it is understandable to feel anxious, especially if your cycles are usually regular.

There are several common causes for delayed menstruation:
1. Pregnancy: This is often the first consideration for a missed period, especially if you are sexually active. If you suspect you might be pregnant, taking a home pregnancy test can provide clarity.

2. Stress: High levels of stress can disrupt the hormonal balance in your body, leading to delayed ovulation and, consequently, a late period. Stress can come from various sources, including work, personal relationships, or significant life changes.

3. Weight Changes: Significant weight loss or gain can affect your menstrual cycle. Low body weight, in particular, can lead to amenorrhea (the absence of menstruation), while obesity can also disrupt hormonal balance.

4. Hormonal Imbalances: Conditions such as polycystic ovary syndrome (PCOS) can lead to irregular menstrual cycles. Hormonal imbalances can stem from various factors, including thyroid disorders or other endocrine issues.

5. Lifestyle Factors: Changes in routine, such as increased exercise, travel, or changes in diet, can also impact your menstrual cycle. For instance, athletes or those who engage in intense physical training may experience delayed or missed periods.

6. Medical Conditions: Certain medical conditions, such as diabetes or disorders affecting the reproductive system, can lead to irregularities in your menstrual cycle.

7. Medications: Some medications, particularly hormonal contraceptives, can alter your menstrual cycle. If you have recently started or stopped any medications, this could be a contributing factor.

As for how long you should wait, if your period does not arrive within a week or two after your expected date, it is advisable to consult a healthcare provider. They can perform a thorough evaluation, which may include a physical examination, blood tests, or imaging studies, to determine the underlying cause of your delayed menstruation.

In the meantime, try to manage stress through relaxation techniques such as yoga, meditation, or deep breathing exercises. Maintaining a healthy diet and regular exercise can also help regulate your menstrual cycle.

If you find yourself feeling particularly anxious or depressed due to this situation, it may be beneficial to speak with a mental health professional. They can provide support and coping strategies to help you manage your feelings during this time.

In summary, while a delayed period can be concerning, it is not uncommon and can be caused by various factors. Monitoring your symptoms and seeking medical advice if your period does not return soon can help you find answers and peace of mind.

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