the actual date of conception is 2 weeks later than what they say. they say the first day of a pregnancy is the last day of your lmp. it's most likely one of the first 2 guys but u/s's can be off by 1-3 weeks. so the ONLY way to know who the father is is to have a paternity test done once the baby is born.
Thanks for commenting heather. You seem to be everywhere answering everyone's questions giving all the help you can.
i've done lots of researching. lol.