Thanks guy, that does make sense,
It's not unusual for symptoms to worsen, or for new ones to appear, when adding a thyroid replacement medication, because the body has to get used to having hormones, it's been doing without.
As FTB4 said, brain fog is a classic symptom of being hypo.
Mental confusion we call "Brain Fog" is a common symptom of Hypothyroid
It seems many thyroid sufferers think that thyroid replacement Hormone causes symptoms to appear, I also thought the same thing when I first started taking medication, Your system is just used to running on low hormone T3, and when you all of a sudden increase it, it kind of shocks your system, even small doses take an adjustment period, Do you have a copy of your Lab results,? If you do post them for more info, Did your MD do an anti-body (TPOab) blood test along with TSH, Free T3 and Free T4, post them along with the reference ranges provided with each. Regards FTB4