I am 10 weeks pregnant not sure who the father is.

I had sex with an old friend of mine November 20th and then sex with someone else on noveber 21,22 ovulated november 23 . I told my old friend that i was pregnant and he flipped out and said it couldn't be his because he pulled out wich i know he did but i still have a concern that he could of came more than once. the other person i had sex with on the 21,22 i told him i was pregnant and he didn't seem upset and said we both know what could of happened so i left it alone and then 2 months later he wants to text me and say that i'm a liar and he knew it from the beginning because he can't have any children so now i'm so confused because why wait 2 months to say that . So according to my last menstrual period wich was November 9th 2013, MY due date is August 16,2014 . I had sex on November 20th wit my old friend and had sex with the other new guy on November 21,22 and I ovulated November 23,2013 . and according to doctor i conceive November 23 which was the day i ovulated. I'm so confused and don't know if the new guy is saying the truth about him not being able to have children or he just donesn't want the responsability . Who can possibily be the father my old friend or the ew guy that claims he can't have children