Hello everyone, I'm new here but wondered if anyone can help me. I have a million symptoms of an underactive thyroid but my thyroid tests say I'm fine. I've been B12 and Ferritin deficient for a very long time and despite iron tablets and b12 shots (every 3 months) nothing much changes. My vitamins D is low also. I asked for the b12 more often and was told no. What can I do? How do I convince my doctor to just try it more often for a while to see if it helps....I'm feeling quite lost right now. Any advice would be gratefully appreciated.