I had sex 3 times in the month of September which was the month of my last menstral period before I got pregnant

I had sex 3 times in the month of September which was the month of my last menstral period before I got pregnant ...I had sex twice, 2 days in the row and 5 days before my period came with one guy and then I had sex 4 days after my period , 1 time with another guy and they both came in me who would be the father ?