Had my blood work this wk and my thyroid level was down again. I do not have a thyroid. My level stayed the same for 7 yrs. After I had my breakdown it drops everytime I get my blood work, I started at 100mcg and it has changed 4x, now I'm on 50mcg. I ask the doc why, he said it was hard to say, it could be because I have lost so much wt, or any number of things. Told me not to worry, how can I not worry? Its driving me crazy!!! Von-1