Who is most likely the father of my baby?

I am 28 weeks pregnant and before I became pregnant, for about 3 weeks, I had cheated on my boyfriend with another guy. I confronted him about it and he knew why I did it and forgave me. He knows about what I am going to ask on here and doesn’t really mind because he is still willing to take responsibility for this baby, but I need to know even though he doesn’t mind.

Well My last period was on march 24th 2009 and my ovualtion date was supposed to be on april 10th. Me and my boyfriend had sex on April 9th at around 4 in the morning. He ejaculated inside me completely. The next night though, around 12 midnight, me and the other guy I had been dating were out and doing our own thing. One thing led to another and we had sex. I stopped about 15 minutes after because I felt really bad about what I was doing. I didnt let him finish at all, so he didnt ejaculate at anytime. Before I had sex with this other guy the night after I had sex with my boyfriend, I told my friend that I was worried about becoming pregnant because m why boyfriend ejaculated inside me. I even told this other guy the reason I couldnt continue was because I was worried about me being pregnant and thats why we stopped. I am worried about the ‘potential’ precum getting me pregnant although I strongly believe that its my boyfriend who got me pregnant because he fully ejaculated inside me and we had sex before I had with the other guy, and the other guy never ejaculated at all. What are the chances of this baby being my boyfriend’s rather than the other guys?

Also, just to know who the babys father is, we decided to take a paternity test, but I am just trying to get an estimated answer of the chances of this baby being my boyfriends?