That's awful. I hope you recover soon! Perhaps in a few days your right hand will feel well enough that you can lay it on your ruler and cut with your left hand. You need to put your cutting blade on the other side of your cutter to do this. I would practice on scraps first! I learned how to cut left handed due to the arthritis in my hand making right handed cutting painful-of course, I have arthritis in my left hand, too!
if you don't think you can do this, all I can suggest is what others have said - ask a friend or guild member to help you. So sorry for your shattering experience. I can't help but admire your fortitude in wanting to get back to quilting right away! I would probably have a nervous breakdown, personally!