How to survive financially

As the title states, how do all of you survive financially? I have been severely ill for over 7 years now, 2 of which I was completely bedridden. 1. I've had every test known to man done on me without a clear diagnoses and regardless of what the cause is I definitely have cfs(and more). I would say at this point i am between moderate and severe, but there's no way in hell I can work although I would love to. Anywho.....no diagnosis, no money, and im forced at 46 years old to live with my mother. How does one actually get on disability with this condition and find a doctor that isn't useless and will diagnose u. I really don't believe in cfs. Yes the symptoms are real, but what I mean is people have "it" and it's nothing more than different issues with people that have caused this "disease". None of that matters. My point(and I need help) is how the hell do u survive financially. I have fought with everything in me to push my body and work but all it's done is set me back and I know at this point that I have no choice but to get help financially. Please, someone point me in the right direction. Im in Michigan and I have been trying for years.