Dna/Conception Help!

* I posted a question earlier, but had some of the info not all there*

I am 29 weeks pregnant, my due date is October 10, 2010. My last menstral period was Jan 6-Jan 10. I went to the doctor on Feb. 22, and she said I was 7 weeks pregnant. I had been with my boyfriend for three years, and had sex very frequently. we had sex Jan 1, 3, 8, 9, 10, 11, 12, 13th. (i was on my period a couple times we had sex.) We broke up, and I had sex with someone else around Jan. 20th. I asked my doctor if she was sure about the 7 weeks, adn she said yes, even though my period was not over until the 10th. I went to the doctor for an ultra sound around 21 weeks and the baby weighed about 1.3 lbs, and my due date has not changed. I just want some assurance, or some opinions on who the father would be. I know it is close to time, but I really believe and according to the doctor my first partner would be the father. I do not think that doctors could be that far off, becuase I thought it took about 10-14 days after sex to become pregnant, which if I went to the doctor feb. 22, and the doctor said im 7 weeks, there isnt a way it could be the second partners. right? im just afraid. any help would be appreciated.

from the way it sounds its the first one

I agree with night_angel that the evidence points to that likelyhood however, If the first guy knows about the second guy, it will be decided by DNA whether you want that or not. It would also be grossly unfair for either of them to pay child support and help raise a child that wasn't his. For that reason I would let DNA decide the issue as soon as possible.

To any other young ladies reading this, think about it. No matter how hot the next guy might be, it's worth waiting a month or two to avoid the delimma.