I was operated on 1 month ago for cancer. I had a lumpectomy and mammosite radiation. During this time I was taking an antibiotic because of the cathater for the mammosite. One week after getting off the antibiotic I developed Cellulitis in my incision. The Dr. put me on Keflex which I have been taking for 4 days. During this time I have continued with a fever (99-100). This morning after the shower the incision was the size of a golf ball and just as hard and red. It began to ooze a yellow/green pus and is still draining. I have a call into the Dr. but they haven't returned my call, what should I do in the meantime? Is it ok to put gauze on it?