How can I tell if I'm bipolar? (details ect, please help me)?

Hello. It sounds to me like you have extreme mood swings which is certainly a classic sign of Bi polar depression. I also suffer from depression and know how it feels to go from jumping around feeling great to thinking i'm worthless just because someone said something i didn't like. You say you have done alot of stupid things while experiencing this mood swing and that's normal behaviour for someone who is suffering from Bi polar depression. I'm sorry you feel this way and recommend you discuss this with a doctor as soon as you can because there is help for people like us! It took me a few years of help from the doctors and psych nurses but i feel alot better than i did, you CAN get better too, please take that first big step and seek professional help! x