I am getting two sores where my belt buckle hits on a scar left from Diverticulitis Surgery. I am not particularly overweight but do have the typical middle age belly fat. The sores appeared to first be below skin level in the form of lumps but eventually came to surface where they have remained. They frequently (almost daily) become inflamed and either burst or, when squeezed, emit a white or bloody white substance. There is no odor to the substance.