I need help figuring out how accurate my conception date is. I had two ultrasounds exactly one week apart. The first ultrasound my doctor said that I was exactly 8 weeks pregnant. There was a possiblity of poor fetal growth so she had me wait one week to have another ultrasound done. The second ultrasound that I had verified that I was then exactly 9 weeks pregnant.
According to this, my conception date would have been July 22. Now I am stuck with the possiblity of my baby not being my sigs. I had sex with a friend on July 24. Since this was after my conception date, is there still a possibility that the baby could be his?
I don't know exactly when my sig and I had intercourse, but I am sure we had sex around that time.
Another puzzle to throw in the mix, my last regular period was June 23 and I had another less heavy period starting July 11. This was why my doctor had thought I was further along than the initial US.
Any help and advice I can get would be great. Thanks!