Yes,
I had this problem for years,If we had the same but if it tender to touch or red.You have to go to Er and have them lance it open and drain it and put a wick in it on antibiotics.It could turn into staph if left untreated.You can not drain this.It must be done by a Doctor.I tryed to drain it and it made it really bad and i got very sick.Look up boil internet slide shows images.See if this is what you might have.I had plastic surg behind my ears called ostoplasty and the Doctor removed some part that kept the infection from returning.