Pimples

Apologies if this is not the appropriate place, or if it’s a little gross…
I have developed two or three very small but very sensitive pimples on my top lip…they’ve been there for several days, and I have not been able to practice at all because they HURT LIKE HECK!! It stings like crazy to even put the mouthpiece on my face.
Do you have any suggestions on how to get rid of these?? I have a concert next week and the only reason I wouldn’t play in it is if I was on my deathbed. Nevertheless, I would much prefer to play in comfort.
Any help would be enormously appreciated.