"so i had unprotected sex about a week ago and he didn&#039;t pull out because he forgot he took the condom off (stupid i know) so i was freaking out so got this pill and took it 20 hours after the event. then this morning i  was cramping and feeling like i had pms and several hrs later i start bleeding. i came on here to read side effects vand apparently starting a period after a week of taking pill is a normal side effect? i hope so! it&#039;s just a waiting game to see if i start my next period."