I took the morning after pill the next day. What is my chance of becoming pregnant?

I recently had unprotected sex with my partner. I took the morning after pill the next day. What is my chance of becoming pregnant?

Because you took the morning-after pill, also known as the emergency contraceptive pill (ECP), within one day of your unprotected sexual encounter, there is very little chance that you could be pregnant. ECPs should be taken within 3-5 days of unprotected sex, and the earlier you take an ECP, the more effective it is at preventing an unwanted pregnancy. You minimized your risk of pregnancy by taking the morning-after pill so quickly after your sexual encounter; there was very little time for sperm to fertilize an egg. You may experience some menstrual irregularity because of the emergency contraceptive, but your period should resume its regular cycle soon. If your period continues to be absent or you are concerned that you may be pregnant, we recommend taking a home pregnancy test. You can schedule a clinical exam with your doctor if you are confused by or wish to confirm the test results.

It is important to remember that although the morning-after pill is intended to prevent pregnancy, it does not protect you against sexually transmitted infections (STIs).

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