I developed shingles three weeks ago and saw my doctor immediately. He prescribed one week of Valtrex and Prednisone, which I completed. About 10 days ago I noticed a rather large bulge in the right side of my abdomen in front of where the shingles were located. There is really no pain except for the burning sensation of the shingles. I had a CT scan with contrast and nothing was found. I am still concerned and plan to see my Gastroenterlologist ASAP, as I have what he calls a "loopy colon" near this spot and a history of colon cancer in my family. Any ideas as to what this might be?