Thanks for the replies folks. I know that carpal tunnel wakes people up at night. But I also have numbness in my LEG. So I don't think it's carpal tunnel OR ulnar nerve impingement. The doc said ulnar nerve, but that wouldn't explain numbness in my LEG or in my thumb and pointer finger. It would seem very coincidental to have ulnar nerve impingement and/or carpal tunnel and then six weeks later to happen to have a pinched nerve in the lower back... The brain MRI didn't show much, so they are saying it's not MS. But then, they can't tell me what it IS.