Something is off

I don't know what it is. But at least once a day I get this horrible feeling in my gut that makes me just want to cry. Could be friends that have turned out to be not so fantastic, the fact that I'm leaving, or small things that are just adding up. Regardless, it's frustrating. And I wish I could just escape to Hawaii or somewhere equally as relaxing for a few weeks and just chill before school starts. Get it all out of my system, per-say. All I know is that something is off - I'm not fully happy, and I should be. I should be able to be completely and utterly joyous for my last month of living at home. It shouldn't be like this...