first it started with one on my neck. If you squeeze it, white pus would come out and then it'll heal and repeat the process. Recently one under my right rib cage just grew, one near my abs and now one on my back. Again, when squeezed pus begins to flow out, it heals again..it is visibly and physically to the touch smaller than it was in the beginning. I do have acne on my chest, back and a little on my face. Can it just be acne? Or something more serious? Thanks!