I play Trumpet and I have a little problem. 2 weeks ago I got home and just took out my trumpet and just started to play some high notes just for the heck of it. I didn't warm up when i started or warmed down after i was done. After that day I went to Marching band, which i go everyday of the week playing at least 8 hours a day, and I warm up and then i started to play some high notes. As i tried i couldn't reach an F on the top of the staff. So i tried some other notes but I couldn't get them out . I was so confused and didn't know what to do. So i thought maybe they were sore from playing, but now i still can't reach them and i could before really good. Its been 2 weeks and I am real frustrated cause i play first part for marching band and i want to play. Just to let you know i only use my bottom lip to play and some of my top lips but mostly im on top of the mouth piece. I've been playing like that every since i started and i wish someone would have noticed that and changed it. Could my Lips be the probably? Also they are chapped so i dont know if that effects them. I do ice my lips, but nothing helps. Could you help me please? i really do want to play normally again. Please write back.