Hi Diane,
I have alot of the same symptoms you are describing.
I also have DDD at c-5/6 but have not had surgery for it. I was treating it for 8 months with no results and then I finally got a TOS diagnosis. I have been doing pt,injections and am starting to look into surgery now. I beleive there is a connection between the DDD and TOS since so many of us have both.

It is important that you find a dr who knows about TOS to get properly diagnosed. Look at the threads at the top for listings and also let us know where you live as there are dr's all over the country.