last night I suddenly felt a sharp pain in my ring finger as I was fretting. My finger instantly swelled up, I stopped playing, and today the finger is worse. It feels sort of like Achille's heel, but in my ring finger-tip. It's not the skin, this isn't a blister, it seems to be the bone or somethin near the bone at the tip of the finger (the part of the finger that frets). Maybe a pinched nerve?? Also it's not a dull, constant pain.. rather it only hurts when I apply pressure the fingertip--even just when I tap at it with my other hand--and its a stabbing pain. There doesn't seem to be internal bleeding. Anyone have experience with this kind of pain, and know how serious the problem is or how to heal it best?