Im so confuse, Im 23 years old, I had my last period on Nov 25th 2011. I had sex with my bf on Dec 4th, 10th, 23rd, 25th, 26th without protection, he did cum inside of me all the times. But, I had sex with my ex boyfriend on Dec, 16th, well lets say Dec 17th, since it was around 1am, without protection. He didn\'t cum, n if he did it wasnt inside of me, I know this is crazy and I regret it so much, but that day I got drunk and was mad at my bf and sad for other personal problems. But now I found out Im 5 wks pregnant. Can someone please help to find out my conception date. and who is more likely to be the father? Thank you so much