Oblation performed last summer. Thyroid tissue still present. Lately I have been tired and have throat pain in the area of the thyroid and have frequent headaches. I have gained weight despite exercise. I am currently on .75 mg of Synthroid. I had the ablation due Graves disease with multinodular goiter. Could thyroiditis still be a possibility at this point? If not, any other explanations? The weight gain is very frustrating and the throat pain is pretty constant. If ablation is done again, what are the chances of thyroid storm or other complications? Thanks again.