I'm going to see a doctor, but I figured I'd see what yall think. I get sharp pain in the big knuckle of my right hand (not the fretting hand) when gripping. It doesn't hurt when I play, but if I'm using hand tools or opening jars I'm useless. I usually play 3 or 4 hours a day. Is it possible that bass is causing it, or is it more likely something else?