I need help. I had unprotected sex in October 17/18 and (think) I got my period in October 21st. I then had unprotected sex a few days in early novemeber nov 1-4/5. I tested a few times and got negatives then finally tested positive on November 24th. The next day I went and my hcg was 167. On dec 1st I got an ultrasound and it was just a black sac with nothing in it. On December 20th the baby was measuring about 7 weeks 2 days but I was 8w4d according to my LMP. My question is the father guy 1 or guy 2.