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Paternity Help:[ Accuracy of LMP and Ultrasound dating at 13 weeks?

Hi girls, I need a bit of help. I've gotten myself into a bit of a mess and just need to ease my mind. My last period was March 12th and it lasted to the 15th. I slept with an old flame March 13 through March 16 (he pulled out). On March 17th my husband and I got back together and had sex at least once a day throughout the rest of the month. On April 12th, I found out I was pregnant. My cycles are generally 28-30 days long with my ovulation being around day 16 or so. (I tracked my cycles for a few months.)

Based on my LMP, my due date is December 17th. I went for an ultrasound at 13 weeks and the babies measurements put me at December 18th. Is this reliable? It seems really unlikely that my flame would be the father, I just need some other opinions. Please don't judge me, I know I made a mistake:(
4 Responses
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879214 tn?1258831321
I too think that it is probably your DH's.  If you were with your old flame from March 13-16 & had your LMP March 12-15 then you would have been menstrating while you were with him & not have been ovulating yet.  But the only way to be sure is with a DNA test!  Good luck :)
Helpful - 0
869568 tn?1248372915
I think no matter what you should get a DNA test completed.  You never know.
Helpful - 0
796536 tn?1251719320
I am going to have to say based on the dates- I dont think its the old flame. I think its your DH's baby. if you still feel unsure after the birth have a DNA test. No judging here its not my place. Good luck with every thing. Keep us posted.
Helpful - 0
873692 tn?1337275733
with the dates so close to each other its hard to know who the father is you can do dna while the baby is in you or wait till the baby is born and do it that way its the safer way does your husband know about the other encounter a lot of men now of days just because there not the biological father still become a dad but i would do dna 1st then go from there good luck sorry i couldnt help you out more if you need to talk message me and let me know what you do  
Helpful - 0
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