According to my ultrasound on June 25th, 2013, I was 7 w 1 d. I had sex with two different men. The man on May 18th came inside me, but the guy on May 20th used the withdrawal method. How do I determine which day was actual date of conception?
Since the dates are pretty close and sperm can live inside you for up to 5 days after intercourse, your gonna have to get a DNA test. An ultrasound and your doctor won't be able to tell