QU WAS RIGHT
SHE USED ME GODDAMN IT
More than one person said that
But I think I was first.
Also, Yog. While I would advise you against calling up your ex again, I think I should give you a little warning for now.
Your new girlfriend. She is most likely looking for somebody to help her pull through. So unless she earns a lot more than you and seems to be managing bringing up her kid without you, she is most likely interested in you as a possible long term partner, I'm guessing she doesn't know that much about your mental situation, and believes you to have a stable job. Now correct me if I'm wrong, because I really don't know enough to tell. But while she is likely simply looking for a partner, there's always a chance she might try to hook you up. So, be a little wary of unprotected sex, since some women try to hook a guy with a child, and be wary of subscribing to legal obligations until you are sure you feel ready for it. I don't know how it works in the US exactly, but I once heard a woman could potentially force you to pay child support for a kid that isn't yours if you "assumed a fatherly role".
I don't want you to freak yourself out by convincing yourself that she is conspiring against you or anything like that. Just don't want to fall into the same pitfall again.