Delayed Menstruation: Causes and Concerns - Obstetrics and Gynecology

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Delayed menstruation?


I would like to ask, last month I had sexual intercourse and used dual contraception.
My period came, but this month I haven't had sexual intercourse and my period still hasn't arrived.
What could be the reason for this?

Yiyi, 10~19 year old female. Ask Date: 2017/04/16

Dr. Huang Jianzhong reply Obstetrics and Gynecology


Last month, there was sexual intercourse with dual contraception, and menstruation occurred.
However, this month there has been no sexual activity, yet menstruation has not arrived.
How could this happen? Answer: The sexual activity from last month may affect this month's menstrual cycle.
Consider taking a pregnancy test.

Reply Date: 2017/04/16

More Info


Delayed menstruation can be a source of concern for many individuals, especially when there is a recent history of sexual activity. In your case, you mentioned that you engaged in sexual intercourse last month with double protection and that your period arrived as expected. However, this month, despite not having any sexual activity, your menstruation has not yet occurred.
There are several potential reasons for a delayed period, and it's important to consider various factors:
1. Hormonal Fluctuations: The menstrual cycle is regulated by a complex interplay of hormones. Stress, changes in weight, or significant lifestyle changes can disrupt this hormonal balance, leading to delayed menstruation. Even if you have not experienced any major life changes, subtle shifts in your body can still affect your cycle.

2. Pregnancy: Although you mentioned using double protection, no contraceptive method is 100% effective. If there was any failure in the method used (e.g., a condom breaking), it is advisable to take a pregnancy test to rule out pregnancy as a cause of the delayed period.

3. Polycystic Ovary Syndrome (PCOS): This condition can lead to irregular menstrual cycles and is often accompanied by other symptoms such as weight gain, acne, and excessive hair growth. If you have a history of irregular periods or other symptoms, it may be worth discussing this with your healthcare provider.

4. Thyroid Issues: Both hyperthyroidism and hypothyroidism can affect menstrual cycles. If you have symptoms such as fatigue, weight changes, or temperature sensitivity, it may be beneficial to have your thyroid levels checked.

5. Other Medical Conditions: Conditions such as endometriosis or uterine fibroids can also lead to changes in your menstrual cycle. If you experience any additional symptoms, such as pelvic pain or unusual discharge, it is important to consult a healthcare professional.

6. Medications: Certain medications, including hormonal contraceptives, can affect your menstrual cycle. If you have started or stopped any medications recently, this could be a contributing factor.

7. Age and Menopause: If you are approaching your late 30s or early 40s, perimenopause could be a factor. This transitional phase can lead to irregular periods as the body approaches menopause.

Given these possibilities, it is advisable to monitor your symptoms closely. If your period does not arrive within a week or if you experience any concerning symptoms (such as severe pain or unusual bleeding), it would be prudent to consult with a healthcare provider. They can perform a thorough evaluation, which may include a physical examination, blood tests, and possibly imaging studies to determine the underlying cause of your delayed menstruation.

In summary, while there are many potential reasons for a delayed period, understanding your body and its signals is crucial. If you have any doubts or concerns, seeking professional medical advice is always the best course of action.

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