Hello,
'shrink' means psychiatrist? Well, anyway, I really think what you need badly is a therapist. There are just a few luckyones who just get well with meds alone. In all otehr cases, meds are a valid support for psychotherapy (as it happens to me, for instance).

And regarding you mother. Well, just reading your post makes me angry, because my parents too always want to control and patronize me (and I'm 36 DAMMITT!).
Unfortunately, however, parents are given randomly, not chosen, and an instinct to manipulate and bother sons seems to be unavoidable. They are just enemies you CAN'T fight. Actually, you can't even consider them as enemies.
So you'd better try to understand her motivations. Maybe she thinks you're lazy because she's afraid to think you're ill. Maybe she tries to keep you busy to help you. Maybe...
BY the way, how old are you? That makes the picture more clear.