There's nothing wrong with you!

I am also graduating in about two weeks, and I totally feel the same way. I should feel excited about my accomplishment, but I feel sad because it's over, my life is going to change now, and going to school is the only thing I'm familiar with. I'm soooo worried about what's going to happen after I graduate that I can't seem to get happy about it.

I think it's a totally normal feeling, to be sad. Just don't forget that it is a huge accomplishment! And you must have done so well to make it through.