Okay so I had sex on Monday and the first 5 mins were without a condom and the rest of the time we did use a condom, he never came or anything but I do understand that there's a possibility of precum. So I began having really bad cramps the same day and the next day I began bleeding a lot, which is my period. My period only lasted 3 days and it just abruptly stopped. It was really heavy these days. But I was worried about the possibility of being pregnant so on Saturday I took a plan b pill and bled a little that day and the next day it was gone. And then Wednesday of the next week I began bleeding again and it's lasted until Friday's and it's not heavy but it is dark blood. I had to wear a pad because it would bleed through but not so much as my periods are. I'm really confused!!! Please help.