1-Order yourself a pizza
2-watch a movie
3-cry yourself to sleep. lol
Seriously though, we can all relate. Do something to take your mind off things for a night, hang out with friends, excercise is a good one. Maybe just talking to someone you know can relate. (friend)
Alcohol won't solve anything. And will only make things worse.
Oh, and just to let you know, your life is only now begining. Real life that is, and you'll have days like this along the way. Learn to cope with it better and try to develop a thicker skin. Otherwise you'll end up living with your parents until you're 40. lol