I had sex with my boyfriend last night and took Take Action about two hours after. Does the EC work even if on first day of ovulation? I'm irregular.

Usually works, but. Emergency contraception pills (such as Plan B, Next Choice, or Take Action) can alter the menstrual bleeding for the cycle in which the pills were taken, and sometimes the next cycle too. One should be sure to check a home pregnancy test about 3 weeks after sex, to confirm non-pregnancy. Pregnancy is not likely, because emergency contraception pills work most of the time.

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