Mostly in my legs, but does anyone else’s body vibrate?

I had a Boston Medical spinal cord stimulator (SCS) installed and I started feeling vibrations in my legs shortly thereafter. At first I thought it was all in my head and that my legs and body were not REALLY & literally vibrating. However recently, during a particularly intense feeling of vibrations, I felt my legs and could literally feel that my legs were indeed VIBRATING!
The vibrating has expanded to cover almost my entire body, but normally occurs from my waist down. The REALLY weird thing is that the battery in my device and in the controller were dead and the device was OFF for at least 6 MONTHS and I STILL feel the vibrations!
Please, does anyone else have experience in body vibrating? Right now, as I’m righting this, my legs feel like they are being massaged by a thousand fingers!