TTC 🙏🏻

Okay so I am 18 years old and I have been married to my husband almost 8 months now and weve been together 5 years. After we finally tied the knot we decided that it was okay for him to  ejaculate inside of me because we want to have kids and were financially ready for one. It's just we've been trying and trying and no luck at all. I am afraid that I just might not be able to have kids. We make sure to do it while I'm ovulating and nothing still.... Any help/advice? 🙏🏻 please?