Injuries like lobbing off a finger are much easier/quicker to deal with, and don't affect your life anywhere near as much as back/joint problems, arthritis and the like. Anything that cause chronic pain needs everything throwing at it that you can to get it sorted. 'Living with it' isn't an answer.Jesus talk about stealing my thunder
I am with @ChrispyUK it's well worth a visit to a chiropractor. The stuff the guy I see found that was referred pain and nothing to do with where it hurt was astounding. They'll also refer you for scans etc as required and much quicker than going to see a GP.