Is it him?

We've been ttc for 10 months now and so far nothing. None of the women in my family, both sides, have ever had any trouble getting pregnant. My mom didn't have any trouble with me or my sister. So... I don't think it's me, if I don't get preggers in the next two months I'm going to go get checked out and my fiancé too. The reason I think it's him is because he was born with some kind of genetic thing. His mom was allergic to his dad's sperm so she had a couple mc's and had trouble when she was pregnant with him but the only thing that's been affected by that is the bones in his ankles/feet. He doesn't think it's him but he knows there's a possibility it is. Has anyone else ever been in this situation or know someone that has?