"my boyfriend and i had an accident where the condom slipped last week on wednesday, may 15. within the first hour, we went to a pharmacy and i took plan b one step. i was nervous because my period didn&#039;t come on saturday, like it was supposed to. keep in mind that i also recently went off of birth control so i could switch brands, so my period would have been erratic anyway. still, as you can imagine, i lived the next days in panic. but the package on the box says to wait up to one week after your expected period. it has been nine days since i&#039;ve taken the pill, but sure enough, this morning, friday, may 24, i woke up with terrible cramps and lots of bleeding. i&#039;ve never been so happy to get my period!"