I feel a tiny numb spot on the side of my tongue,what could this be its my only symthom,yet oral surgeon says healthy tongue and nuero says its stress?

Reduce swelling: Possibly there is some swelling of the nerve to that area. Possibly you bit it and it is still swollen, but not enough to see on examination. Ask your doctor about using papain and bromelain to reduce any swelling. For my patients I use Clear.ease, one 4x a day, melt in mouth between cheek and gums. A good way to reduce stress is to count your inhale four and exhale six.