My last period was from May 26-29 & my fiancé & I were together from May 27-June 2. During this time we had had sex from the 27th to the 1st & sometimes multiple times a day. He left me & because I was upset, on the late night of June 7th/early June 8th I slept with someone else. When I got a positive pregnancy test around June 25th, they asked when my LMP was & I told them & my due date was set at March 1st. When I went back at 8 weeks, the MD there vaginally checked me {pelvic exam, not an ultrasound} & said my uterus measured at 8 weeks. My baby stayed measuring half a week to a whole week ahead throughout my pregnancy {like at 16 weeks, an ultrasound was done & he measured at 16 & a half} & came naturally {meaning my water broke on its own} 2 days before my due date. It is completely possible that my fiancé is the father, right ? We're going to get a DNA test but I just wanted to ask & hopefully get answers from a professional. Because he's known since the beginning of what I did, & he believes that he's the father but now that the baby is here, it worries him if he's not. And he was looking stuff up & found that there's only a 10% chance that he's the father. Also, I'd like to add that my son was 7lbs 4.8oz & 20 & a half inches long, I was 7lbs 3oz & 20 & 3/4 inches long when I was born & my mom had me 3 days after her due date.