Venting about:Military Boyfriend and Low sperm count

My boyfriend and I have been together for a while and the conversation of kids came up. I think this is partly due to the fact that his ex from high school and gf before me is having a baby. He started questioning his ability to have kids and went to get his sperm tested. he assured me he is completely over her but it was just bothering him since one day he wants kids of his own, I mean so do I. I’ve always wanted to be a mom but his sperm had a motility level of 2 and the count was really low I don’t remember the exact number. It took him a while to tell me the results Because he knows I wants kids and he was nervous about me leaving. TBH I’m not sure what to do I like him but I do want kids. Plus he’s in the military station in Texas I’m in Michigan so it’s now like we get the best chance to make kids anyway or be together a lot. Which is fine for now Cus I’m focused on college but later on in life I just Idk. I needed to vent.