I am 58, female, and had a hysterectomy at age 45. I have always had a abundance of energy until the last year or so. I was told I have Fibromyalgia about 8 years ago. I take 60 mg of Cymbalta normally, but occasionally 120 during the winter months ( depends on severity of pain). For the last 2 weeks I have been sweating like a pig. Night sweats, day sweats, low grade fever (1 or 2 degrees above normal). I m exhausted, ache all over, gone to doctor and given antibiotic (Cefdinir 300 mg twice a day). No change - Blood test say normal. What is wrong with me?