Can You Get Pregnant While Taking Menstrual Delay Pills? - Obstetrics and Gynecology

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Hello doctor, my last menstrual period was on July 1st, but my cycle has been irregular.
I will be traveling from August 12 to August 14, so I started taking the menstrual delay medication ESDIAN F.C.
TABLET (1 tablet) and NORINA TABLETS 5M (2 tablets) once a day starting August 5.
Can you tell me if having unprotected intercourse from August 9 to August 14 could result in pregnancy? Also, I have been feeling nauseous after taking the medication; is that related?

Ke Ke, 20~29 year old female. Ask Date: 2016/08/09

Dr. Cao Guotao reply Obstetrics and Gynecology


Hello, emergency contraceptive pills do not have contraceptive effects.
Some people may experience nausea after taking them.
It is best to take preventive measures beforehand.
Wishing you good health.

Reply Date: 2016/08/09

More Info


When considering the use of menstrual delay pills and the potential for pregnancy, it's essential to understand how these medications work and their implications for sexual activity during their use. Menstrual delay pills, such as ESDIAN and NORINA, are typically hormonal medications that can postpone the onset of menstruation. They work by altering the hormonal balance in your body, which can prevent ovulation and delay the menstrual cycle.

In your case, you began taking these pills on August 5th, with the intention of delaying your period for a trip from August 12th to August 14th. You engaged in unprotected sexual intercourse from August 9th to August 14th. The critical question here is whether you could become pregnant during this time.

1. Effectiveness of Delay Pills: Menstrual delay pills are most effective when taken as directed and started before ovulation occurs. If you started taking the pills on August 5th, they may have been effective in delaying ovulation and menstruation. However, the effectiveness can vary based on individual hormonal responses and the timing of ovulation in your cycle.

2. Timing of Ovulation: If you were to ovulate during the time you were taking the pills, there is still a possibility of becoming pregnant if you had unprotected intercourse. Generally, ovulation occurs about 14 days before your next expected period, but this can vary significantly, especially if your menstrual cycles are irregular. If your cycle was irregular prior to taking the pills, predicting ovulation becomes more challenging.

3. Nausea as a Side Effect: Experiencing nausea after taking the pills is a common side effect of hormonal medications. This symptom does not necessarily indicate pregnancy, especially if you have just started the medication. However, if you continue to experience nausea or if it worsens, it may be worth consulting with your healthcare provider to rule out pregnancy or other potential issues.

4. Pregnancy Testing: If you are concerned about the possibility of pregnancy, it is advisable to take a home pregnancy test about a week after your expected period. This will provide a more accurate indication of whether you are pregnant. If you do not get your period as expected or if you have any unusual symptoms, consult your healthcare provider for further evaluation.

5. Consulting a Healthcare Provider: If you have ongoing concerns about your menstrual cycle, the use of delay pills, or the possibility of pregnancy, it is always a good idea to consult with a healthcare provider. They can provide personalized advice based on your medical history and current situation.

In summary, while menstrual delay pills can effectively postpone your period, they do not guarantee prevention of pregnancy if ovulation occurs. If you are sexually active and concerned about the risk of pregnancy, monitoring your cycle and taking a pregnancy test if your period is late are prudent steps. Additionally, discussing any side effects or concerns with your healthcare provider can help ensure your reproductive health is managed effectively.

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Dr. Huang Yiwen reply Obstetrics and Gynecology
This question has already been answered.

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Hello, you should not be pregnant. Wishing you good health.

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