Due Date Keeps Changing

[skyemarie0529]

My due date keeps changing every time I go to the dr.'s and it's driving me crazy because I don't know who the father is. I was sleeping with the guy I was dating until October 19. We broke up and I slept with another guy on October 21. When I first found out I was pregnant the dr. said I was about 8 weeks along. That wouldn't be possible though because that would put my conception date the week I was on my period (first week of October) and I didn't have sex on my period. Due date then was around July 4. Anyways that would've been guy #1. I went back on January 2 and had another ultrasound and the dr. moved it back to around July 7. He made sure to say these were all approximate though. This would still be guy #1 though. When I had my gender ultra sound in February my due date got moved back again. This time to July 12. That would mean I ovulated October 19. At that point it could be either guy #1 or guy #2. I'm so confused. I know I'll need a DNA test but I'd like a little peace of mind. Please help!

[AnnieBrooke]

Skye, if that "puts your conception date the week of the period," that actually makes sense because doctors begin the date count of pregnancy (8 weeks, 10 weeks, etc.) on the first day of bleeding of your last period, not on the day they guess conception happened.  If a doctor told you that you are "x weeks pregnant," he or she was counting back to the presumed day 1 of your period, not to when you conceived.