Firstly i am going to see my doc but just wondering if anything similar has happened to anyone else. Im 31, about a week or so ago i noticed i was sore in my armpit. TMI but it felt sore like a large pimple and i squeezed it and blood and pus came out. Thought id just keep an eye on it. Now the lump is still there and not painful at all and is hard and unmovable. Im pretty worried, but the fact it started out painful etc and like an ingrown hair or something and now feels like something more sinister is weird.