3 years of trying 😭😭😭 but husband don’t care

We’ve trying for 3 years , I had done couple of test with my obgyn, (ultrasound , uterus and ovaries normal check my Fallopian tubes not blocked , HSG normal , thyroid normal and LH that confirmed that I’m ovulating ) because my insurance did not cover fertility , the only thing he needs to check is his sperm but he is no interested , what can I do ,I feel so sad 😭 because I really want a sister or brother for my 4 years old daughter every time we talk about for him is just like joke , I crie a lot every time I think about , what can I do just to for get about having another baby without getting upset 😭, and just accept God plans.