I think it’s my husband...

We have been trying to get pregnant for about a year & a half. I have 2 boys already but he doesn’t have any, even though he used to kinda spread it around like peanut butter. We did a home sperm test & his count was on the low side of normal range. Neither of us want to do any doctor appointments/testing because we believe that if God wants us to have a baby, He will make that happen. It’s just frustrating because, I am older than my husband...8 years older. I will be 37, this year.