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Is Guy A or B the dad

Hi. My last period was on aug 22nd. I had sex with guy A on sept 3rd and 5th and had sex with guy B on sept 10th. My sono says I'm 6.5 weeks due date may 26th. Which guy is the dad?
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Avatar universal
On a 28 day cycle your likely ovulation day was Sept 5th. By Sept 10th the egg would no longer have been viable. Only if you sometimes have 32 day cycles could the second guy be the dad. Your due date suggests you might have ovulated early rather than late.
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Thank you. That's what the apps have been telling me. But my OB said my conception period was btwn aug 27-sept 9th and that had me worried and doubting my calculations. My cycle averages 28 days but has varied btwn 25 to 31 days up until my last period in August
Does this make any difference?  Should I be worried?  I don't want guy B to be the dad.
134578 tn?1614729226
COMMUNITY LEADER
Like ppowb, I also see the first guy as by far the most likely, based on your early ultrasound measurements that gave you the due date.  

That said, if your menstrual months have occasionally been as long as 31 days, the difference between the 5th and the 10th is not the biggest of time gaps, and the information did come from an ultrasound, not a DNA test, meaning it's not absolute. If you are going through with the pregnancy in any case, in your shoes, I'd go through assuming the first guy is the dad, but would also do a DNA test when the baby comes, just to never have to wonder again.
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I just saw your comment above, about "Does it make a difference?" It really does sound like the first guy has the odds. But in case you can't wait 40 weeks wondering, you can get a DNA test done while pregnant (after your seventh or eighth week), via a swab from the guy(s) and a blood draw from you (your arm). It costs quite a lot of money compared to a post-natal DNA test, but then you would know absolutely, and soon.
I only had one month cycle that was 31 days then the very next was 25 days then I got pregnant. I know the most absolute way to know is a DNA test but as u said its very expensive. I feel in my gut that guy A is the dad. And my feeling was reinforced with my due date. I guess I will always have that doubt in the back of my head.
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