I have been on so many meds for sleep and anxiety. Right now is the worst ever I have slept and this has been months where I don't sleep at night anymore and just nap during the day. For myself it is the pain and anxiety and then cycle.
For you I think it is good idea to talk to your doctor about a med similar to valium. Or maybe it can be used on a bad night? Have you tried Lunesta? I think that is the one that is supposed to enter blood stream slower to keep you asleep?
I hope you can find what works for you and feel better too