Have you had your adrenals checked by a doctor that is very knowledgeable yet?
Do you have symptoms of hyperthyroid? Or heart palps? I'm currently raising my thyroid (Armour) and my doc told me to watch for racing heart and heart palps and if I noticed them I was to drop back down to the previous dose right away and call her.
www.stopthethyroidmadness.com/ is a really good site for thyroid and adrenal issues.