I have noticed this "acne" under my armpit but it can't be from shaving because it's a little lower than that. They are also only under my right armpit. It's very frustrating not being able to wear a swimsuit without someone asking about it. They are deep under the skin and hurt very badly. They dont pop easily (yes, iknow your not supposed to sqeeze them) and sometimes they turn a purple color. When they do pop it's like a pocket of blood and pus. I take showers frequently so i know it's not from poor hygiene. I just want the stupid things gone. Do you have any suggestion as to what they are and how to get rid of them? The help would be much appreciated!