I can't make a diagnosis, only your T or pdoc can do that, but from what you describe, it sounds like it. The depression suddenly morphing into bouncing off the walls is a pretty good indicator. I would recommend getting in contact with your T so she can see you in this manic-like mode and make an actual diagnosis. Or at least you can give her all the gory details.

In the meantime, pay close attention to your spending (a lot of manics go on spending sprees), driving speed (wheeeee, I'm doing 85 in a 30 zone!) and stay away from caffeine, it'll just make you worse.

Good luck!!