When to Expect Your Period After Taking Emergency Contraceptive Pills? - Obstetrics and Gynecology

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Emergency contraceptive pill


Hello doctor, I would like to ask, if I take a second-generation emergency contraceptive pill 5 days before my expected period (according to the app), when can I expect my period to arrive? Thank you, doctor.

Niming, 20~29 year old female. Ask Date: 2022/08/15

Dr. Cao Guotao reply Obstetrics and Gynecology


Hello, after taking the emergency contraceptive pill, you should expect your period to arrive within a week, especially since it's close to your menstrual cycle.
Wishing you good health!

Reply Date: 2022/08/15

More Info


When it comes to taking emergency contraceptive pills (ECPs), such as the second-generation pills, it's important to understand how they can affect your menstrual cycle. ECPs are designed to prevent pregnancy after unprotected intercourse, and they work primarily by delaying ovulation. However, they can also cause changes in your menstrual cycle, which can lead to some uncertainty about when to expect your next period.

Typically, if you take ECPs, your next period may arrive earlier or later than expected. For many women, the period can be delayed by a few days to a week after taking the pill. However, since you mentioned that you took the ECP five days before your expected period, it is possible that your period may still come on time, but there is also a chance it could be delayed.

The hormonal content in ECPs can cause your body to react in different ways. Some women may experience spotting or bleeding before their expected period, while others may have a heavier or lighter flow than usual. It's also worth noting that stress, changes in routine, and other factors can influence your menstrual cycle, so it's not uncommon for periods to be irregular after taking ECPs.

If your period does not arrive within a week of when you expect it, it is advisable to take a pregnancy test to rule out the possibility of pregnancy. ECPs are not 100% effective, and while they significantly reduce the risk of pregnancy, they do not guarantee that it will not occur.

In summary, after taking emergency contraceptive pills, you can expect your period to arrive around the usual time, but be prepared for the possibility of it being delayed or altered in flow. If you have any concerns or if your period is significantly late, consulting with a healthcare provider is a good idea for further guidance and support.

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