I have a pretty bad cold. I am getting very frustrated because I really want to play because my school band has a concert next week. The music is pretty hairy and requires concentration. My problem is not being able to play in tune. Ever since I got this cold I can't play in tune, so I know it's not something happening with my embouchure. I just can't get the right pitch. Now, maybe it's because I have a minor ear ache and can't hear it well enough to fix it. When ever I sit with a tuner and attempt to tune it wavers between being in tune and sharp and flat. Any thoughts or any good over-the-counter medicine that helps a clogged nose?