Not sure how to handle this anymore.

As of right now I’m a stay at home mom with a little boy 14 months. I’m also 10 weeks pregnant. My bf and I broke up once when my LO was 6 or 7 months old we ended up working it out. Well now I’m pregnant I thought we were doing great but I guess I’m wrong. He’s “not sure if he wants to be with me” it makes me really upset but I’m scared to do this alone. One baby is fine but two... two young babies. I have no money, no job, he pays wbu edging. I feel so scared and alone.