a lot of my old symptoms returned, sore throat, allergies, wheezy, lethargy and fatigue, aching muscles, runny nose, sore feet and I felt a lot worse. I read a lot of the posts on here and decided to question my GP and ask for my test results. I explained my symptoms and how my diabetic daughter, who also has an underactive thyroid nearly died last year due to her platelets being so low that the iron did not even register and her GP didn't know how she was still standing. She had pain all over and couldn't even get in and out of the bath. Her feet were so painful she told me it was like walking on the bones and she thought she was dying and didn't care. After intensive iron treatment she has recovered but will be on iron for the rest of her life. My GP was extremely helpful and knowledgeable about thyroid problems and agreed to test for B12 folate, ferritin, vit D, a full blood count, liver function and antibodies. The first tests have come back the very next day and show very low vit D and I have been given a prescription, I am still awaiting the antibody results. I am still confused though as my TSH has dropped even more to 0.08 in spite of the reduction in levo. My GP wants me to return for another blood test after a few weeks of taking vit D as this is also a vital vitamin for the pituitary gland and lack of this vit can produce similar symptoms to underactive thyroid. I am hoping that we are at last getting somewhere but will have to wait and see.