I posted a similar question a couple of months ago. Bad leg pain, muscle ache, fatigue, weight gain. My endocrinologist basically blew me off and said that none of it was related to my thyroidectomy. I explained to him that I did not have any of this prior to my surgery. He of course, said, based on the TSH levels that was not the reason for my symptoms. I was definitely dismissed. I sent an appointment with my rheumatologist, and she said that the thyroid could possibly be related because anything can happen. I’ve been to a functional Doctor Who prescribed all sorts of supplements. I hear all of your frustration and wish I had answers for all of us.