How to get my husband to have sex when he has a low sex drive

My husband and I want to have a baby but his sex drive is soooooo low. I’ve tried everything. Even when I do what would normally do he says he’s not in the mood or maybe tomorrow. I’m exhausted from trying and being turned down so much. He made me so mad today when he said we will just adopt. Not that I’m against adoption or anything and I would love to adopt one day. I feel he hasn’t given me a chance to try and know if I can have a baby on my own. Anytime I bring up a baby he gets stressed out. We have only been “trying” his idea of trying for 7 months. I feel my dream of being a mom or carrying my own child away from me because he has control over this. I don’t bring up having sex because I’m ovulating or anything like that because before it made him feel like it was a job not for fun. He is a very god man, very kind and caring he will cuddle all the time say I love you a lot but just has no will to have sex. I’m just frustrated and needed an outlet. How can I get him to be apart of this. Should I tell him to see a doctor? I just don’t know what to do to help make our dreams come true of having a family. I’m emotionally and mentally exhausted.