I have what I think is a blister. It looks like a pimple. It's below my silver cap tooth. And that tooth is annoying and hurts had it since I was a 11. I was suppose to remove my tooth but my dentist said I don't have a tooth underneath. This has been shifty lately, and is moving forward that everytine I put my face on the table I can feel the pain. then all of a sudden this so call blister came. It comes and goes, get big and small. I try not to squeeze it at times but it always comes back. I don't know what to do with this blister and where came from and my silver cap tooth, on what to do with it. Please hel. Thank you.