You know what? Years ago when I was your age (lol) I was raiding my family medicine cabinet for anything I thought might give me a buzz, and came across a bottle of carbamazepine. I took two... and they didn't do much of anything for me, but I noticed that when I listened to music, everything sounded off-key! I thought that was the weirdest thing. What kind of a side effect is that? Changing the pitch of sounds? If anyone knows why it does that I'd be curious to know.
I would see a doctor as soon as possible, also, maybe even call a poison control center until you see him/her.