im so sick im starting to question reality

i celebrated my birthday last weekend, right after that i had a week off school, usually im just stuck at home rotting in depression for vacation but this time i made plans to go out and have fun, i love going out and having fun but no. NO. i got sick. so sick i can barely think, and i think a lot. i dont even feel like myself anymore, it started snowing for the first time in a really long time and i love snow, but i cant go outside to touch it. i feel quarantined, isolated, killing myself. school starts again in 2 days and nothing is new. send help.