I get frequent lumps filled with pus under my armpits, sometimes under my breasts and my cleavage area. It's pains a lot and often I end up squeezing them sometimes the pus oozes out sometimes not. Should this be something I worry about? Should I see a doctor regarding this. I have one lump with pus at my back which is not visible my hard when touched. This has been there for a long time. Why does this occur.