Hi, I had my thyroid removed in November 2010, and RAI in December at Christmastime for Papillary Cancer. My Endo. kept dismissing my symptoms. I had muscle weakness, constipation foggy brain unable to focus, lethargy and pain in the back of my head and neck area. I was also experiencing night sweats since post RAI. I ended up at the primary care Dr. Because I thought I must have and infection in my body and my ear/head felt strange. I figured i can always take a laxative for the ongoing constipation if necesssary, but I couldn't get antibiotics over the counter if in fact I was sufffering from and ear infection. It tuns out I had a Vitamin D deficiency which 50,000 UI of Replesta seemed to help. The foggy brain and lack of focus and constipation was cleared up but I continued with Hyperthyroid symptoms to the point of shaking hands and leg cramps. I changed Endos. had blood test and my TSH numbers were .037. I was put on synthroid 100mg and Cytomel 5mg twice a day. But I continued with severe pain. I called my Endo. and now they are changing to Synthroid 112 mg. and Cytomel stays the same. I am scheduled for a blood test in June. Meanwhile I wonder will I ever feel better again? Is there any normalcy for us cancer survivors? Can anyone give me hope? Are we destined to be racked with a myraid of autoimune diseases?