I know this may sound crazy but.. I was having sex with my x boyfriend around may 19-26.. Than end up coming in contact with a old high school lover June 1st when we had sex.. I had my 1st ultrasound done July 15 saying that I was 8 weeks & 1 day.. Than had a ultrasound done October 15 saying I was 21weeks & 6days.. So who is the father cause is like really close to me and I'm so lost...

The only way to figure out who the father is, is with a DNA test after the baby is born. Ultrasounds are a best guess and can be off 2 weeks either way. The dates are too close to even guess.

You'll have to wait until baby is born and get a DNA test done.

Good luck.

Sorry, there is no way to tell at this point at all, The periods of sex is too close together. The testing for a date can be off from one to two weeks, Since it uses estimates of average size.

So there is no way to know till child is born and there is a DNA test is done