Okay. I had sex with my boyfriend while I was on my period. It was the 5th day and the blood was light. He usually just pulls out at the end but we were drunk and somehow he didn't think it was in my vagina..long story short he finished inside of me. The next morning I wokeup and still had like really really faint blood but my period was over. I'm really scared and embarrassed but that's besides the point. I know there's a possibility I could be pregnant but can someone give me the chances that I'm not?