I Had Thyroid Cancer In 1972. Also Had My Para-thyroids

i had thyroid cancer in 1972. Also had my para-thyroids removed. was told to stay on 50,000 vitamin d for the rest of my life to save my life. been on for 38 years, no problems, in very good health. Moved to ocala, Fl and Dr's here think I'm going to be toxic, after 38 years I don't think so, wont give me a precription. plus my tsh needs to be 0 or less so cancer won't come back, even though t3 and t4 are higher, thyroid patients are really hypo not hyper. How can I make these Dr's understand. My Dr. Michigan said don't go to any Dr. if they won't listen. What do you think?