Wrist hasn't stopped hurting since November

Around Thanksgiving, after a day long computer gaming session, my right wrist started hurting the next morning. It hurts especially on the thumb side of my hand. Gaming ALL day is not normally for me, so I thought maybe the pain would eventually go away, but it hasn't.

If I bend my wrist, if I apply any pressure to it, it hurts. Holding hands sometimes hurts, also typing.

So, what do you think could be wrong? Should I see a doctor? Please feel free to ask any questions or direct me to any other subreddits.