I am a virgin. My boyfriend and I had anal sex. He did not ejaculate. We did it for like 2 minutes and when he came out he moved up a little but not in anything. I jumped and move out of the way. I said stop and went to the bathroom anyways to clean up even though there shoudn't have been anything there. My period was about a month and 5 days ago. I was having my periods every 2 and a have weeks. Just before I thought my last period was going to start I was getting the cramping and stuff. Then I got the stomach flu, and my period never showed up. Now I have been having cramping and stuff for like 4 or 5 days, and the bloding and everything. I havn't been sick or anything, but I have been gasy. I don't know if that is normal or anything. I am concerned that I could be pregnant. Everyone say that I am not, and that I couldn't be, and to stop worrying. I need a second opinion. Please Help.