Wrist pains...possible carpal tunnel?

It's been hurting on and off for a while. I want to be a writer, you see, so everyday I'm scribbling in a notebook and typing in a computer. Today when I woke up, my wrist was in pain. When I move it up, down, side to side, or in circles it cracks and hurts. I've had these symptoms on and off for a while. Could this be carpal tunnel?