Struggling 😓

So I'm 11 weeks pregnant, my boyfriend split up with me right before we found out I was pregnant, I told him when I found out and he took it really bad to start off with but now he's came round to the idea of being a dad. 
I really want us to make a go of the relationship again but he's set on never getting back together and doesn't even want to try for the baby. He just said he'll always be there so I don't understand why he doesn't want to work on our relationship. It's such a hard situation and I don't know what to do :(Â