My boyfriend thinks I want to leave him

Hi everyone

So I’ve been with my fiancé for 1 year plus and things are not going well for us financially. He always has hope that our lives would be better but things are just getting worse. He has been acting really paranoid about the whole situation and has been giving me some attitude and reading meaning to every little thing. He feels I’m going to leave him because he’s broke

Now he wants a baby but I don’t want a baby yet because of our financial situation but he’s taking it as I want to leave him later on that’s why I don’t want a baby

Please any advice?