I have tingling in my feet and it looks like my knees and feet (ankles down) have a permanent tan. Both legs swell during the day but stop at the sock line. I have worn compression knee highs prescribed by a doctor , but my calves had waves of chills while wearing them. need to know if this is part of having fibromyalgia , I have had other blood tests that indicate that I have a mild autoimmune disease. also have a positive fibrin split products with a normal d-dimer . I am a female, 48 yrs old, I have also had a leg doppler-negative,