On 1/6/11 had a nuclear stress test. Approximately 1/24/11, I developed coldness/pain in my feet and legs. Although this condition has improved, I still suffer from cold/prickly feet which awaken me EVERY night despite two pairs heavy socks and heavy covers. Today is 3/22/11. Could this injected substance have damaged my thyroid and caused this problem? I was already on 120 mg of armour thyroid for "low thyroid" which I have taken for ten years? WHAT CAN I DO TO CORRECT THIS SITUATION. Until this stress test, which I should never have consented to, I was in excellent health. Please help!!! I am miserable.