I have used the galvanic spa 5 times...and I had an electrical shock on my right temple area.. I stopped on it for a second..OUCH...freaked me out... i had like an ache on that area... the next day my whole right side of my skull ached..and slight tingling sensation ...not painful.. but noticeable on the back right side of my head.. it i snoght time and it feels achy and slight head ache annoyed, hoping I dint do some damage to my brain uuuuuuuggggggghhhhhhhh... I DON'T HAVE ANY MEDAL FILLINGS EITHER i did have my wedding band on but not on the side where i was holding the device.... ANOTHER THING TOO.. why is it that one side of my face has better results ...anyone have the same problem even after 5 treatments?????????