No one can really tell you who the father is except for having the dna test. Were you using protection? And if not, why? I don't mean to sound rude, and I know things like this happen, but it always amazes me how someone can not know who the father of their child is. In any case, please take care of yourself and your baby. The important thing is that you love your baby, no matter what. Look at the bright side, at least you know who you were with and when, unlike some of those fools on the maury show...Lol good luck!