I dont know who is the father of my baby and i had unprotected sex with this guy several times then the next month on the 8 i got my period and i just had sex with one men from that date that i got my period unprotected as well almost everyday?

You can get pregnant during ovulation.The closer that happens to your period will determine the source of the pregnancy. The period itself does not as this can represent the lost of the last unfertilized egg and not the one fertilized to result in your pregnancy. Unfortunately there are to many variables during the overlap and there is no accurate way to determine this except with a paternity test