Welcome to HCM,
Your husband requires further investigations like S.Testosterone
from both Testicles. Sperms are generated in the Testicles. Biopsy study will tell us that whether sperms are formed or not. If only Vas deferens are blocked, he can try for re canalization. Whether he will be able to conceive you or not, all depends upon reports. You should consult a Urologist
. Adoption can be a solution.
Wish you & your husband good luck,