Just wanted to see if anyone else is on any type of thryoid med for either under/over active thryoid? I started out with under active. Was always tired, cold, headache and no period for 6 mos. Dr. checked after 6 mos and still not strong enough so upped med. I've now had 3 periods in the last 6 weeks so will be calling again. ANyone else ever go through this?