"i promised i would write this because just like you i was scouring the internet for answers. i had unprotected sex on april 17th, the last day of my period, and my bf finished in me. he said not to worry since i was on my period but i was already freaking out so the next day i bought the plan b pill. i never had any side effects and it didn&#039;t make me sick. may 13th was when i was supposed to start my perod..and i didn&#039;t. so begins the freaking out even more and buying multiple pregnancy tests. every test i took was negative but that didn&#039;t reassure me. my period is 11 days late but i finally started today!! i know it&#039;s hard not to but try not to worry. if you took this pi&#039;ll how you&#039;re supposed to it will work."