So I've noticed over the past week or so a couple of very painful bumps under the skin right on the edge of my armpit near where my chest meets my armpit. The one on the right armpit went away on its own, but I still have one on the left. Is it possible to get a plugged duct that far back?? I'm trying to rule things out. I did switch deodorants recently, so I switched back to my old kind, in case that was the case, but the bump is still there. I just thought of the possibility of plugged duct today, so I tried massaging it in the shower. It still feels like it's there. I've never had a plugged duct before so I don't know what to expect. Thanks!