I will say this, that if you're over 50 and you've played a fair amount of sports as a child, then chances are good that you're going to have some sort of pain somewhere. When I was in Junior High practicing football, the largest guy on the line stepped with a cleat right on top of my left hand. So, the bones broke, re-healed and calcified right where my hand bends.. Beautiful,
now I pay for it every time I play basses, or heal-touches. It doesn't stop me, but it hurts.
I'm thinking that stabbing pain is a long lost nerve ending that got severed in your early years.
If you're getting old, then you either play through it, or not.. At this point you need better technique than your younger brothers here! So, make it good! If your technique is awesome and it still hurts, then probably everything you do, driving, golf, writing, also causes pain.