What would you do? Husband is infertile

You and your husband were trying to have a baby and find out he is infertile. You both want to have a child so you ask if he would be open to a sperm donor and he say no way. He wants to adopt instead but you desperately want a child of your own and you are open to doing a adoption as well As a sperm donation so you can get pregnant and have a child of your own. What would you do?