This brings back some very heart-wrenching memories for me. My advice to you...if you and your husband are "normal", get into foster care. After numerous ivtro, "turkey-baster", and other trials. I told her flat out no more hormones...I wanted to grow old with her and she was putting herself through hell for this. We had our son for about 1 year in foster care, my wife finally relaxed, and it happened...
So, we got into foster care, go to Gulfstream initial, the wife comes up to SAV for a romantic weekend, and "9" months later, we are proud parents of a baby girl with an adopted big brother that turned 5 right before she was born (we finalized the adoption in Sep, and she was born in Feb). "Rent with the option to own" as I like to joke around, and both are ours with unconditional love...
Not saying it will work for you, but there are a ton of people it has worked for.
Trust me, I know it does not help in any way, shape or form with what you are going through, as we've been there, done that, have way too many t-shirts, and it sucks is all I'll say. Wishing you and your husband the best!!!