בעיית פוריות הגבר

Shalommy husband and I will, s.G.w, become jewish in about one month. We are 48 resp.39 years old and after our wedding we liked very very much to have jewish children. We are married more than 20 years and underwent a lot of examinations with the result of non treatable male infertibility (a biopsy of the testicles wasn't still made, because there is no helpful result to expect).Do we have any medical possibility in context with Halacha?Toda raba