And no he's not a doctor and shouldn't be diagnosing me
from what you said, he isn't diagnosing you. He, at most, is commenting on your demeanor and actions and relating that to a possibility of you having not taken your medication.

But I am sick of the innuendo and the talk behind my back.
as are a lot of people in the world. The problem is; as long as it is not illegal activity, there is really nothing to stop him from doing it and so far, you have presented nothing that would be illegal.

If I have to quit because of the stress this causes me can I get unemployment or is that out of reach.
It would pretty much put it in the "out of reach" category.

If quitting because your boss was a jerk was good enough to still qualify for UI, I suspect the unemployment rate would go up a few percentage points the moment that was discovered. There are a lot of jerk bosses.