Actually, -- hopefully you'll read this soon -- look into the Obamacare thing:
https://www.healthcare.gov
Depending on your income, your insurance premiums can get a nice subsidy, and some people with plans with a good copay only have to pay 15 to see the doctor!
Then you can see the proper medical professionals, rather than be dictated by your wallet
Go for an alternative treatment like acupuncture. Sometimes, if medications don't work, natural treatments will do. Or if you want to get away from the pain, you can purchase a copper bracelet from Sabona. It is proven to help in relieving pain.
So, you've been to your doc and maybe an ENT. Have you seen a neurologist?