I am sorry to see you are in so much pain, and that you are struggling so much to receive treatment. It is very difficult to receive pain management that works. It sounds like you are and have explored many different options. If you experience intolerable pain while you are waiting for your referrals, I DO urge you to go to the ER. ER's are sometimes more accustomed to dealing with people in extreme pain than doctors offices. If you need to work out a payment arrangement with them, it would be worth it if they help you. They can also order urgent tests such as MRI's or other imaging more quickly than a doctors office if they see urgent need.
I hope you will be on your way to relief very soon.