Was hyperthyroid till I had my thyroidectomy in 2014. One month later gained 10 lb. 3 years later I have gained approximately 35 lb total. Can't seem to lose anything. Tired all the time and sometimes feel depressed. Cannot tolerate cold or heat. I have exasperated osteoarthritis on top of it. I take 75 mg of Synthroid at this moment but I seem to think I should be taking more but my endocrinologist will not increase my medication. I take B12 everyday but it doesn't seem to help boost my energy. Any ideas on what I can do to help get me to motivate more with more energy?