The day my fertile window ended (when it's just a normal day after fertile window) I started cramps in the morning and started bleeding, and I could see uterine lining in the toilet but I really am not sure if it is my period because of how early it is.  I did have sex with my husband during my fertile window but it was during the last three days and we made sure he cleaned his penis well and that he peed so there would be no sperm. No he didn't finish in me, I know it sounds like a dumb way to avoid pregnancy but we were out of condoms and it has worked in the past. This is the second day of bleeding for me, it's light and normal red colour, my last period was just as light. Please help it's really confusing, what is it? How is it even possible to get your period 12-13 days early? The last time that Happened to me was when I first started to get my period but I know that's normal. I also had bleeding during sleep