Last week, on Tuesday, I got my braces removed, and I've had trouble playing the trumpet ever since. I've had braces off pretty much all throughout middle school, and I just got them off during my freshman year in high school. After getting my braces removed, I found out I couldn't play anything above a middle-c. That's a really big problem for me because I'm in marching band, and I have to play a bunch of music and stands tunes, with a ton of playing tests in the coming week. I've tried everything I could think of to get my range and tone back, including lip slurs, long tones, middle school beginning band exercises, the pencil exercise, the first few pages of Arban's, etc, but I still can't play anything over a middle c. Is there anything I can do that will drastically improve my tone and range before Tuesday or will I have to fail all of my playing tests? Please Help!!!