I had a flat brown mole biopsied 12 days ago. It came back precancerous so I had to return to have the area frozen. The doctor said it would look like a crater but would fill in over time. Instead it looks like a liquid filled balloon, bulging under the band-aid. Is this normal healing process or do I need to go back to my doctor to have it looked at? I noticed this swelling several hours after the procedure. Any information will be greatly appreciated.