OUCH! I can understand why you're freakin out a bit. That's 1 of the things I hate about manic episodes: I'm thinking so fast, thoughts bouncing around in my head until I have no choice but to start talking as fast as I can, trying to relieve the pressure in my brain before it explodes. But now my mouth is trying to catch up with my brain so anything is liable to get past the filter that's normally in good working order and keeping me from saying something inappropriate. Yep, it really stinks. I think there's more sympathy/acceptance/etc for mental illness (except sometimes for substance abuse) in the medical field than in many other professions. I was a paramedic in my former life and most of my co workers and boss knew that I was bi polar. They really didn't make a big deal about it.
Maybe you can have another conversation with your boss? Explain that what you told her was done so in confidence and ask her to respect your privacy & try really hard to avoid any more personal revelations to her. Good Luck!