@kevdb
By any chance have you gained weight?

I did and recenlty noticed when I laid down my wires would protrude upward (I could feel them). I have my device under my chest muscle.

The protrusion only occured when laying on a hard surface not bed.

I have pain and discomfort around device when I use my left arm extensively. I find movement of the arm can aggravate the site.

I am on my 3rd device and have had one since 2006