I wish I knew what I'd do in your situation... but I don't know what I would do, honestly! Except find another doctor who could actually help more. I guess it's a situation of "manage the symptoms" instead of being able to cure the disorder? I'm sorry that this is happening to you. I'm also sorry about your son and husband - that really is a lot of stress for you all, everything combined.
Edit: Actually, since I don't know anything about MedicAid, is there any way perhaps of having counselling (for you and/or your family) to deal with everything? Someone to talk to??