So my boyfriend and I have been together just over 5 years. We have had a rough relationship break up get back together then break up again. Well this last time we broke up I decided I would try to move on. A week later I started messing around work a co-worker. Well the last time the co-worker and I had sex was January first we did the whole pull-out method. My ex and I decided to try to work it out so I went home on the 5th of January we had unprotected sex. Well now my period is 8 days late. My last period was December 25th it lasted 2 or 3 days. My boyfriend is convinced if I am pregnant he isn't the father because he thinks he can't have kids. His ex wife and him tried for a baby with no luck then she had some <a href="https://glowing.com/glow-fertility-program">fertility treatment</a> done with still no luck. She ended up cheating on him and got pregnant very soon after by the other guy. My bf and I have been trying over a year with no luck. So he honesty thinks there's no way. What are y'alls opinion? I have wanted to have a baby with my bf so bad but idk which one the baby would belong too.