First of all you can check whether you can get pregnancy
through your husband's sperm through TESA ICSI
(A kind of test tube baby; costly option). If you can't afford test tube baby, you can go for donor sperm. The things to be looked before going for donor sperm are; registration of semen bank, 180 days freezing period of semen (to prevent HIV), blood group
of donor, infectious screen of donor(HIV, HbsAg, VDRL
, HCV). Plus you can ask for donor with desired characteristics like height, weight, complexion etc. Hope this solves your problem.
Wish you good health.