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This could be RSDS, or Reflex Sympathetic Dystrophic Syndrome which can often present initially with numbness or pain on one side of the body.
RSDS is due to the parasympathetic nerves being affected, which control the circulation, and thus can cause numbness or pain. It usually affects only one limb or one side of the body initially although later both sides can be affected.
You should consult your doctor and discuss about RSDS and to rule it out.
You may consult this link for more info: http://ww2.arthritis.org/conditions/DiseaseCenter/rsds.asp I hope this answer was helpful. If you need more information, feel free to ask. For accepting this answer, please click on the green 'accept' button below. Feedback/Bonus will be warmly appreciated.