ExpertDr.Sabiha AnjumObstetrician and Gynaecologist3 years agoA. You can take it within 72 hours of unprotected intercourse but the efficacy will keep on reducing as the time from the intercourse start increasing so after two weeks of the episode make sure to do a pregnancy test and check even if you take the medicationWrite Your Answer Here
Sonam PrasadMom of 2 children3 years agoA. hi dear
For example, if your longest cycle is 30 days long, subtract 11 from 30 — you get 19. Then, count 19 days starting from day 1. If day 1 was on the 4th of the month, you'll mark X on the 22nd. So the 22nd is your last fertile day of this cycle — you can start having unprotected sex the next day.
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