R.D.
It sounds like a.... OMG I CAN'T THINK OF WHAT IT'S CALLED, there's a name for it, I had gotten one forever ago, I was like 8... it was caused by a reaction to the medal in my earrings (apparently I'm allergic) and the allergy caused an infection. If I remember correctly, they drained it and put me on an antibiotic. I have never had a problem since!! I remember it being painful, I couldn't sleep or talk on the phone on that side. I felt so much better once they drained it! Good luck :)