soo i took plan b exactly a month ago after unprotected sex. i wasn’t sure if he came in me. i wasn’t ovulating or near my fertile window. i was five days late and i finally got my period (i think) on monday. the first day wasn’t bad, i barely had a flow. but the second day it was super heavy and today it’s not as heavy. it just seems to be sowing down. should i be worried ? idk if this is my period or implantation bleeding ?? how would i know ?? i know plan b can cause your cycle to become messed up, i’m really confused and kinda worried. it was my first time taking plan b, so i don’t really know what to expect.