TTC 1st child

My husband and I are trying to have a baby we are both in our early to mid-forties in order for my husband to get checked out to make sure his sperm is good and all. does he have to go see his PCP or is there a specific dr. For that like we have the gyno. We have been trying for 4 months and there's still nothing. So I want to continue trying and possibly seeing if there are any issues on his side.