"had unprotected sex with my girlfriend and she took the plan b pill the day after, like 13 hours later. i couldn&#039;t sleep and i was very nervous. she got her period a week later, it was heavy, which i guess is also a good thing haha. if your reading these reviews to make you feel better, i&#039;ve been in your shoes. just have faith in it, it&#039;ll work don&#039;t worry."