Lump from Cool Sculpting? (photo)

Hi, I am slim build but had lower ab fat. Had 1 CoolSculpting and saw results 7-9 months later. While I am happy with a flatter belly, I was left with a lump on the right side of my belly button the size of half a golf ball. I thought a 2nd treatment would help. They concentrated on that side. 6 months later no change. It absolutely was not there before, and it is definitely noticeable. I actually feel self conscious in a bikini now, when I never had before.Any advice on how I can get rid?