here is the scenario..
had sex july 17
bleed july 27 to aug 4 (i dont know it its mens)
had sex aug 20
no more mens came up
had ultrasound sept 14 it says (5 weeks 5 days edd is may 12)
follow up ultrasound sept 27 (7 weeks 1 day edd is may 15)
gave birth may 8 (38weeks/39weeks)
who will be the father? guy from july 17 or august 20? pls help