husband infertile?

So about a couple days ago I didn't want to have sex. bit I still wanted to be sexual and I let him cum on me for like the first time in forever (I've been with him for about 7 years) and I was clear..... not normal. So I asked him if it has always been like this because i don't remmember (we have been trying for a child for a year so he usually cums in me) and he says it has for him. So I looked it up

could this be the reason we have not had any luck in the child department? I told him that we should see why this is because that I'm the person who just wants to know why is this the way it is. I'm trying to get him to go to the doctor but he is so stubern that he won't go