Hello, I recently had a tummy tuck (never smoked in my life) and at 7 days post op I developed a blood filled blister. It was removed while removing my tapes and now looks like a black crusty necrosis. 11 days post op, hte black part was scraped off (debridement I assume). I am using silver sulfadiazine, and my PS is seeing me regularly. How long will this take to heal? Is debridement necessary or can this heal on it's own? Thanks!