Any part of your body is susceptible to RSD at this point. You must do whatever you can to calm down those potential problems asap. The diagnosis is less important than the outcome IMO.

If you're not comfortable with your doc/s, keep looking--but, do research on what others have tried to forestall spread. Things to try asap=hot baths with Epsom salts, warm water PT, massage, lidocaine cream, a course of steroids, etc.