I had sex Dec 15th with man #1, and Dec 18th with man #2, THEN had my period Dec 23-26th. Had sex with man #1 again on Dec 30th.....that was it, but then Jan 16th found out I was pregnant, According to my LMP my due date is Sept 29th but my 7 week ultrasound gave me a due date of Sept 26th. THEN, my 10 weeks ultrasound said I was due Sept 23rd. I'm SO confused!!!! If it is man #1 after my LMP, I would have ovulated only 3 days after my last period??? Is that possible?? Which man is most likely to be daddy?? #1 or #2?