(((hug))) sorry your life is so complicated and hard right now. Rethink about the child support. That's the least he owes. He owes the system if you draw from the system, that's only fair to taxpayers. Do your best.

I don't know the rules about receiving disability when you haven't paid in enough or in time enough. Have you checked with the salvation army for a job, or job resources? You might be able to find something where you don't have to work with people, and that would limit your stress reactions of the PTSD I think.