Anyone else get pain with typing?

I have a black Macbook that I use for just about everything, but I've noticed especially with prolonged use that I start to get dull pain in my right elbow and wrist. Anyone else have this problem? I do a lot of note taking and outlining as I am in a grad program for physical therapy (I also acknowledge the irony of this situation), but I am unable to reproduce this pain doing anything other than typing on this computer! I feel like it's a tendinosis issue but it only seems to be affecting a single muscle in my forearm, and I've treated enough other patients with similar symptoms to know that it's not carpal tunnel (I don't test positive for any of the 3 cardinal signs for this condition). Just wondering if there are any others out there who have had trouble with this and any solutions you may have found. "stop using your computer so much" is not an option until spring break.
I've used a mighty mouse to see if that helps but its a hassle to carry around and it doesn't seem to help very much.