Hey doctor. Im really confused right now, and i want you to please help me. i want to know who you think has the better chance to be my baby father. My last menstrual period was April 4th, 2010 and my due date is January 9th 2011. I had sex with my boyfriend on April16th-April18th. eaning i had sex with him that whole weekend. My doctor told me my conception date was On April 18th. But i had sex with a quy around April 26 and he didnt use a condom the first seconds. He didnt come. Then i had sex with another boy on May 3 and the condom slipped.Do you think my boyfriend is the baby father if i had sex on the day it was my conception date, or which one you think it is ? Please help me :(