Does anyone know if blood types matter when trying to conceive and if so which ones do and don’t mix?

Ashten

My husband and I have tried everything for two years to conceive and we haven’t had any success. We even went to doctors and I’m very healthy and fertile but my husband has an extremely low sperm count. He’s changed his eating habits, what he wears, we have used pressed, temp checked the works. Nothing has helped and we can’t afford fertility shots. One of our family members mentioned blood types maybe being an issue? I do have a son from a prior relationship who will be 3 in April and my ex and I only tried once before finding out we were having him.