Ok so i started having tingling in my right foot and calf.. Now rsd in left arm. both shoulders and neck.. Fear its spreading down spine.. some pain in lower back.. minimal.. but i tolerate it well so far. the tingling is in toes and heel and right finger tips.. and the calf on right.. its a new thing.. I see doc on friday.. but its the doc that cant help me.. still waiting for other doc to get me in. its a waiting game for him to get me in.. im getting worried cuz the tingling is getting more and more frequent.. any ideas if it could be spreading down the spine or not?