Just ned to ask a quick question. Has anyone had trouble with the area where they put the control part of the unit? My butt has really begun to bother me with burning pain, the inability to stand, walk or sit very long and feeling as if the unit is moving around in the pocket. I have lost about 40 some pounds since my illness in April and am wondering if that could be part of the problem. Wishing everyone a good evening, even though there is a full moon! Lisa