Lovux: Get that arm checked out. You got talent. Don't let it go to waste!
I have. Multiple times. I've had my arm X-rayed and examined by like a trillion different doctors and everything seems to point in one direction; namly exhaustion and poor ergonomic circumstances, such as a too tight grip on my pencils and the like. I know it does sound bad when I talk about my arm, but I actually isn't THAT bad. Though the on-and-off pain and exhaustion is still enough to kill off any inspiration or will to draw or write...
I draw by using a bandage to eager the pressure, and that's probably my life-saver! So no worries there.
I'm not that good of an artist.