I had a similar problem in a similar place and went to the Dr. and they said it was a pimple that turned into a mini cyst. what happened was, I popped it and didnt get it all out and the pimple pus went inside instead of out side. which caused a mini cyst to form. Tho it was drained I still have a pocket / scar that from time to time re develops into a cyst. I have got to the point where I can take care of it myself without having to go to the dr. to get it drained. I take a brand NEW sewing needle And some rubbing alcohol and drain it myself a bit painful but you get use to it and save a but load in money .View Thread