Dude...get your ass to the ER ASAP. I just posted a thing on this titled, "Abcess and Surgery.)
I'm fresh out of the hospital and i had fever, extreme pain, tender to the touch. I waited for about 5 days and went in to the ER. I know have a 7 inch incision that was about 4 inces deep. They had to remove an abcess that got infected and part of the musclle tissue in my glutes. If your reading this
and you haven't been go NOW. The fever is the main concern....your body is fighting an infection. I did the same thing with heating pad and rubbing and it didn't work. Go get it checked out.