Welcome to PC. you can find lots of support here.

I wouldn't be so quick to label yourself bi polar. It's possible.

The thing that came to my mind was the hormonal stuff. If you are still only having three to four periods a years something is still off. Have you been to an endocrinologist in awhile? My niece went though something similar and it took quite awhile to sort it out. I don't know all the details but I know part of the problem was her thyroid. A whacked endocrine system can cause all the stuff you are talking about besides the tough years of being a teen. I would try to get your parents to get you into an expert endocrinologist and go from there.