Thoughts on single mothers ?

I recently found out I'm pregnant with my first child. Before this I use to think there was something wrong with me and I could never conceive and never will. I am now just over 4 weeks pregnant and I couldn't be happier. But the thing is my so called boyfriend wants to abort it because he feels he's not ready, isn't stable and wants to live his life. Although he has good points, I feel he's being selfish of his own needs. I don't want to abort it, it's everything I yearned for and now that I have it I don't wanna let go. What should I do ? I'm thinking I should leave him and do it on my own with the support I get.