Im not worth it

My partner and i have been having arguments for a few weeks. The basis of the arguments is because im moody and he doesnt accept my affection. He always says he doesnt like being touched (he has a very irritable untreated skin condition) so it makes me feel unloved/unwanted when he pushes me away. Its either the skin thing or "hes tired". This is what makes me moody cos i feel unwanted

We spoke it out tonight and he is just so defensive. I asked him what he wants to do and he says he wants to be with me but i said why when im moody and maje you unhappy?? He's so defensive when i tried to explain my feelings so i can't really get them across. I dont know why we're together anymore its like fighting a losing battle. I feel detached from him cos he doesnt like being touched/always tired. I dhno what to do. Feel like a spare part. Im 33 weeks pregnant and i just feel like the world would be better off without me. It saddens me cos i love her and i cherish her kicks and bumps. But if im so much of. Ashite person then she may as well go to him and his family and i'm better off on my own. Whats the point anymore?