Hello Im 43 So Far Two Surgeries First Over 17years

Hello Im 43 so far two surgeries first over 17years ago was a hernia almost 3 years ago hemorroids. A staff infection on my thigh any way first a was feeling that same vibration in my leg the it moved to my rectal area Im a straight man Ok and this vibration is compared to a lite cell phone tex vibration please tell me what is this