It definitely sounds like these symptoms are affecting your life negatively. Bipolar really messed me up when I was in college (I'm 23 now) and I wish I had had the motivation and foresight to really get it checked out then before I had my first breakdown after my freshman year. Do yourself a favor and see a doctor. Getting the diagnosis isn't a death sentence - it will help you get the right treatment so you can move on with your life. I hope you feel better soon! <3