I have an ongoing pain that runs along one side of my right hands middle finger between the base of the finger and the lower joint (proximal phlange). I suspect this pain may have originated from the use of a computer mouse. I tend to be a bit high strung. I have since switched the use of the mouse and have tried to use my right as little as possible. However it has been a week and the pain is relatively the same.
It got a little worse yesterday when I used my right hand to open a jar. It seems to hurt the worst when I open jars, or extend the finger upwards, or when I stretch via pushing the finger towards the palm and to the left towards the pinky.
I'm concerned about it because I'm starting a new career in Sign Language Interpreting and this could ruin my livelihood if it gets worse. I suspect it is a tendon problem but I'm not really sure. How can I take care of it? Stretching doesn't seem to help, but maybe I'm doing it incorrectly. What would be the best ways to take care of it?