Hi, I am 34yrs old.male.Recently I observed that my left hand palm get numb and the thumb gets pain very severe.This happens when I drive the bike and holding any thing for certain time like 1minute or so. the pain is very severe, and it gets off when i make my hand straight. And from the past few days left side chest above the nipple area is paining, Stinging pain, When I press that area hard the left hand gets the shock kind of thing, and the jaw is also paining. Recently 15days back had gone through all the test, everything is normal, ECG is also normal. please help me in diagnosing my problem.