Delayed Menstruation: Concerns and Remedies - Obstetrics and Gynecology

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Menstruation has been delayed for three weeks?


Hello Dr.
Tsao, my last menstrual period was on November 27, 2015, and it has been over 23 days since then.
My last sexual intercourse was on January 3, 2016, and although we used protection, I am still worried.
I took five pregnancy tests within 14 days after the intercourse (all using the same brand of test) and all were negative.
My menstrual cycle has always been irregular, but since I had intercourse and my period is now over three weeks late, I am quite concerned! Is it possible to buy medication to induce menstruation? Additionally, since I am abroad, I am unsure how to communicate with the pharmacist.
Could you please provide me with the correct name of the medication to induce menstruation? Thank you for your help!

Dolly, 20~29 year old female. Ask Date: 2016/01/19

Dr. Cao Guotao reply Obstetrics and Gynecology


Hello, isn't it true that in foreign countries, a prescription is required to obtain medication? If you need to take medication, you can take progesterone (Provera) 5 mg twice daily for 5 days, and your period should come about a week later.
Wishing you good health.

Reply Date: 2016/01/19

More Info


Delayed menstruation can be a source of anxiety for many women, especially when it is accompanied by concerns about potential pregnancy. In your case, since you have already taken multiple pregnancy tests within the appropriate timeframe after your last sexual encounter and all tests have returned negative, it is less likely that you are pregnant. However, it is important to consider other factors that could contribute to your delayed menstruation.

Menstrual cycles can be influenced by a variety of factors, including stress, changes in weight, hormonal imbalances, and underlying health conditions. If your menstrual cycle has been irregular in the past, this could also be a contributing factor. It is not uncommon for women to experience variations in their cycle due to lifestyle changes or emotional stressors.

Regarding the use of medications to induce menstruation, it is crucial to approach this with caution. While there are medications that can help regulate menstrual cycles, such as hormonal contraceptives or progestins, these should only be taken under the guidance of a healthcare professional. Self-medicating with over-the-counter "menstrual induction" pills is not advisable, as these can have side effects and may not address the underlying cause of your delayed menstruation.

If you are considering using medication to induce your period, it is best to consult with a healthcare provider. They can evaluate your overall health, discuss your menstrual history, and determine if there are any underlying issues that need to be addressed. They may recommend a blood test to check hormone levels or other diagnostic tests to rule out conditions such as polycystic ovary syndrome (PCOS) or thyroid disorders.

In terms of communicating with a pharmacist in a foreign country, it can be helpful to prepare a few key phrases in the local language or to use translation apps. You can explain that you are experiencing a delayed menstrual cycle and are looking for advice on safe options to regulate it. It is also advisable to bring any relevant medical history or documentation that may assist the pharmacist in understanding your situation.

In summary, while it is understandable to feel concerned about a delayed period, especially after recent sexual activity, it is important to approach the situation thoughtfully. Avoid self-medicating and seek professional guidance to ensure that any treatment you consider is safe and appropriate for your specific circumstances. If your period does not return soon or if you experience other concerning symptoms, please reach out to a healthcare provider for further evaluation and support.

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