A: It looks like your TSH is near zero, and I'm wondering what was happening when you had it a little bit closer to one. When we have a low TSH, it can cause some pituitary suppression issues, and that could explain some of the symptoms that you are experiencing.
If your blood pressure drops, I would also consider looking into thiamine. Please check out my article on thiamine and the information in the advanced symptom solutions.
As far as the hair cycles of falling out, that does seem a bit odd to me. The thing I would look into would be potential gut infections for that. The cold intolerance could definitely be a symptom of pituitary suppression.