I had an unfill after similar symptoms in May, went approx 5wks with no fill to let things rest, had a repeat xray which indicated the band looked good. In May, my symptoms were reflux and pain in substernal and upper back. I was under a lot of stress which may have contributed to the problem. The xray in May showed a slight shift in the band, ? was it truly a slipped band, I don't know but they took the fill out and it relieved all my symptoms immediately. I am up to 4.5cc now in a 10cc band and feel I could use just a bit more, the MD is approaching very cautiously, which is fine. I wish you luck.