so under my arm, I have a small, little(like ant size) dense/tough dark ball under the skin. I was wondering if any1 knew what it may be? Im going to a doctor soon..but I would like to take some ideas. Its been there for a couple of years..and when i put my fingers around it and lighly squeeze..i can feel that it is really tough, and i can put my fingers around it.it only hurts if i try to squeeze it. But its not a cyst..because it is not on the surface, but under, in a tiny round tight ball...