According to all the ovulation calculators I have found, I ovulate on the 1st until the 4th of May as the first day of my last period is the 20th of April. I think I have a 28 day cycle (not quite sure). I had sex on the 1st of may with one guy and he in ejaculated inside of me, but then on the 2nd I had sex with another guy who didn't come inside of me but we did not use a condom the first time we had sex that night. He withdrew, then the second time we started without a condom but then he put one on. Anyway, I am now pregnant. Is the 1st guy the dad? Or could it be either? I need someone to help me figure is out because I am very upset that I don't know who the father to my baby is.