Some answers please!

[Tlove4747]

I've posted numerous times I'm just wondering if my due date is march 26th according to my first ultrasound given when I was 11 weeks 4 days and that gives me conception time around the very beginning of july... If my baby is born a week after or two weeks after does that mean my conception date could of been July 20th? Just wondering because I had sex with a mistake on July 20th or after.... So I'm wondering if with room for error if I should get a DNA test ? My dr told me that I conceived in late June .. But I'm obsessing and can't stop thinking what if.. Based on dates and room for error anyway sex on July 20th or after can be baby dad?

[pregnantlady13]

I think ultrasound due date because babys can be born anytime so i wouldnt worry all thought i kno exactly how you feel i really doubt u got pg in july especially late july

[Tlove4747]

So basically I want to know what is more accurate in dating conception? Ultra sound due dates or actual birth date?