Might be infertile?

Hi! I have been with my SO for almost 2 years now. We started off really careful sexually with condoms and then slowly became less and less responsible. My boyfriend has probably cum in my like 10 times now and I haven't become pregnant so wondering if that's normal or you think there's a chance I'm infertile?

We aren't "trying" by any means but it does get you wondering if there's maybe a problem with one of us?