Well, I'd say that the guy from May 21 has the strongest chance, but would do a DNA test to rule out the guy from June 1.
I got my due date at my first appt based on the first day of my last period and then an ultrasound at 10 weeks confirmed the same due date
Did you get your due date from an early ultrasound?
Oh jeez. I completely meant that I think its the guy from the 21st. My due date is Feb 16th. And my approximate conception date was May 26.
I don't see why you think it would be the guy from May 17 if you slept with him when you were having a period. When did that period start? You are more likely to have gotten pregnant on June 1. Have you gotten any ultrasounds that have given you a due date?