I think the condom had a hole in it…

Ok I had sex with an old “friend” of mine friday and saturday. Friday we were very intoxicated and saturday both of us were sober. He used a condom both times but he used the trojan magnums which i think were too big for him. He isnt a small guy but about average. I woke up sunday morning and had what looked to be semen in my underwear. I am just not sure that if i’m pregnant how I am to prove it to him. Either semen leaked out because it was too big or there was a hole in the condom. Just any advice would be greatly appreciated. Also I have known this guy for 7 years and he already has a 2 year old. Hes 19 and im 18.