Hi, I m currently pregnant and I ve been told that I m 13 weeks based on my last period, but my problem is about a week before my period I was taken advantage of while being unconscious and I know that he was inside me, but I don t know if he ejaculated in me. When I got my period it was a little short but still strong. I didn t say anything about it because I m currently in a relationship and I was terrified to tell him. About a week after my period I had sex with my current boyfriend and he came in me for the first time. Well I m now pregnant and terrified that I don t know who the father is because the due date is based off my last period and that was in between both situations. Is there anyway to know for sure who is the father? My doctors are set on me being 13 weeks solely based off of my last period.