Pregnant and confused

I'm pregnant by my ex boyfriend but at the time I conceived we were together. In our past relationship, he was abusive physically, emotionally, and sometimes very manipulating. One incident we had was when i told him that i didn't want to have sex for a while due to health reasons. He stated that it was my job to have sex with him and even went as far as telling me he was going to have sex with another woman if i didn't. He constantly tells me how I'm messed up mentally but every time i ask him how, he can't tell me. The problem is he wants to be with me and start a family. I want to be a family also but i told him if he's not going to change and apologize i can't do it. I'm lost...