That sort of pain has happened to me on several occasions. I never went to a doctor, but I second the recommendations of others to do so. Mostly what I did was lay off of the computer for a while. Try and stretch out your wrists and hands regularly every day, and you might want to get one of those "exercise balls" (Or, if you want a dual-purpose toy, get one of those rubber balls that light up when they hit something, so you can have an exercise ball and an Australian indoor-rules Quidditch ball, too). Generally, I always got the pains when I was deep in a First Person Shooter or AIM craze, spending many, many hours without ceasing in front of the computer.
In other words, AFAIK, it's one of those "warning signs" of Carpal Tunnel, so try to back off of computer and other dexterity-heavy activitys for a week or so. This means no (or very little) shooting or dry firing, lots of stretching your hands and wrists (carefully), and no.. er.. Right, you get the idea.
I'm gonna go try to make sense of what I just typed.
~Slam_Fire
"My, you've got a strong grip."
"It comes from years of being single." ~Something Positive