What should I do? Stay or leave?

We've been together for almost 4 months. I'm 8 weeks pregnant and we weren't trying to conceive but we did. I've had to move away from him in the past couple of days but while we were together we fought all the time and we weren't really happy but I didn't want to leave him. I still don't want to leave him. I love him with everything in me but tonight he told me that he was done and that I could name the baby anything I wanted that he didn't care. Right after reading that text he calls me and says he wants to talk about it. What should I do? Should I try to work it out with him? Or should I just end it because that's what he said first? He is very much a flip flop and goes back and forth with me about our relationship. I don't want my baby to grow up without a dad but at the same time if he doesn't want the bay I'm not going to force him. Please share your opinions.