Dna paternity Potential 1 month apart

[Mommy2two1618]

Ok so I am a 22 year old single mom of soon to be 2 children. I had a fling or a one night stand if u will on. November 25th (guy a). I later went on to actually start talking to someone (guy b). We had intercourse on December 28th. I had a normal period on December 15th. I was late and had not gotten my January 15th expected period so a day or 2 after I took a clear blue digital test and it came back positive. I'm estimated to be due on September 21st 2018 and estimated conception date of december 29th 2017. My question is which is most likely the father and Could there be a possibility of (guy a) being the. Father with intercourse being a month apart and with the dates I was given? HELP!!!

[RockRose]

Well,  definitely the more likely candidate is the guy you had relations with at the end of December.  

[Mommy2two1618]

I figured but I wanted some reassurance of course I'll be testing to find out for sure but wanted an educated guess!

[RockRose]

That sounds pretty reliable.  It would be unusual to be 4 weeks further along and not have that caught at an ultrasound performed around 16 weeks.

[Mommy2two1618]

Ya.. But I'm still unsure which guy is the more likely candidate for paternity.

[RockRose]

How was the estimation of your due date calculated?  Did you (or a doctor) just calculate from the first day of your last regular period,  or did the due date result from a sonogram or lab work?

[Mommy2two1618]

They estimated me due on the 15th from my last period but recently had a doctors appointment and.  Ultrasound to measure all organs and. Growth which they then decided I was due the 21st