I seem to have developed a high pitched ringing in my right ear. I noticed it a few days ago and its still going. At band recently I have been wincing when the band, particularly the cornets, plays high and loud. I'm really worried that it'll be permanent and also, if it has been caused by band, that'll mean drastic measures... It can be caused by many other things too so I'm hoping it might be something other than band. Has anyone else had this? For how long?