I started experiencing depression around your age which was later diagnosed as Bipolar II, but mine was triggered by an event and so might not be so applicable. It's tough at that age to separate what is "normal for a teenager" from what might be an indicator of something like bipolar... I remember I really struggled with that concept, all the time actually, and how I felt different but didn't know anything else so how do I say what is Normal and what is Illness?

I'm not sure if what you described is mania or hypomania... In my experience, it feels more like I can't control my actions, even if I know they are inappropriate or uncalled for. When I was like that in high school I would hit people--not nicely or playfully, but because I was so irritated to the point of losing control.
I think that might have been what Trippin2.0 was getting at...?