I don't know if i'm bipolar or not but im happy one moment and all depressed the next. Sometimes at night I can't sleep and just toss and turn and go downstairs to watch tv and when my mom comes down i freak out on her and backtalk her without knowing what im doing. Then next morning im all happy and then i get all depressed again. And it's not just being a little depressed, sometimes i cry because of it and then im happy again. Help?