I have recently had my full bloods done and also my thyroid, my bloods i have done as I am on methotrexate and they were fine but apparently my thyroid result was low. I had a call from the doctors saying they want to reduce my thyroxine to 50 instead of 150, this confused me as I have been on 200 for a long time now and I told them this. My question is, why if my results are low do they put my thyroxine down and not up? I am already putting weight on and am very tired and achy so thought I might need to up my dosage. I am confused?? I also have pernicious amaemia, coeliac disease and sera negative rheumatoid arthritis. What am I to do??