in dec 2006 i had a total hystorectory. i had a real hard time for months after. i started having severe headaches, mood changes, increased bp, fatique... in may 2007 i was old that my thyroid & t4 was low. i was put on cytomel 25 mg. things were ok for a little while. july 2007 i started having daily headaches. they turned into constent 24/7 headaches. this lasted for 2 months. no one knew why, and didn't suspected the tsh or t4. i went to the neurologiest and she was unsure also. they did some a mri and labs and, suprise, my thyroid was 0.13. i'd say that was low. i have been dx with hypothroidism. we have increased the cytomel to 50mg. i will reckeck my levels again this week.