Until now, I still don't have my period. I'm expecting my period today but it isn't coming. My last period was on Sept. 27. It lasted for more than 7 days. My cycle is about 24-26 days (estimated) 'cause I think I'm irregular. 5 days ago, my boyfriend and I fooled around and rubbed our genitals on each other. Sperm went near my anus part (sorry for being graphic) and I orgasmed. Will the sperm swim through me and I'll get pregnant? Is it possible?