Hi everyone. I am not sure what is wrong with me. I do have two benign cysts on my thyroid - had that biopsy done a year ago. I am always so tired, recently it has gotten a lot worse, I can't remember anything, I have gained some weight. My blood work came back normal. My doc put me on thryoid meds but said he thinks I may have FM. How can my doc be sure of this. What other symptoms are there? Any advise/suggestions/help is greatly appreciated.