I'm so sorry. It must be scary having it spread to the other arm. This disease does suck but you can get through this.
I know what you mean about lack of sleep. I have not slept through the night since mid December 2012. I know I am a newbie but I am getting so run down. Plus, with all the pain, I need sleep now more than ever.
The people here are so helpful and the board has been a great support for me. Even just knowing that there is a group of people who understand is such a comfort. (I call you guys my CRiPSy Crew.) I hope it helps you at least a little to know that we get it, we know how much horrible it is. I wish I could tell you how to make the pain stop; I wish I could do that for all of us. But there is always someone here to listen.