Everyone is different.. and just becuase a single block made you feel better doesnt mean you have rsd. I didnt have symptoms like color change and temp change until 6 months after i was dx. The block actually made me worse.... Take a deep breath and dont assume anything.. I also have TOS...
Its a really long journey just remember you dont know for sure, you need to get a doctor you think you can handle it and has some idea of what RSD is.. Many people go through many doctors....Please please please... arm yourself with information....

You should try looking up RSD hope.. it was really helpful for me ....

Hope things go better, much love, and good luck