Hello there...I have mine in my R butt cheek about two inches below my waist right about in the middle of that cheek. I do not feel it when I sit down. I do feel it when I lean up against something. The only problem I had was when the swelling started to deminish the battery shifted a bit and my unit started to stutter. The rep was able to fix that. It healed well and I can sleep on it no problem.
all my best
Johanna*