Solo Ensemble = Me dieing

So in a couple of days is solo ensemble for my school. I am doing 3 things and I have been stressed out like no other lately. I just finished learning my choir solo for this contest a couple a days ago. It's insane. I've had how long to work on it? Um lets see... about 2 1/2 months if not longer. I always procrastinate. I just learned the trio I am doing as well. Even though I haven't had that one half as long. Not only am i worried about this but I have school, basketball, this contest, getting ready for the cruise I'm going on next week and the dance. I donno why I'm freaking out about all this stuff. Oh yeah for contest I'm doing a choir solo, trio and a band solo on my tenor sax. So far I haven't been worrying about that one as much. Well at least not until today. I practiced my song with the band teacher and I totally butchered it. Not sure what happened but I was freaking out. It had been going perfectly fine until I had a bad day. WOW life sucks. Why do I put so much upon myself? I just don't get it well wish me luck that I make it through this week alive...