I recently had my T4 and TSH and Vitamin D done and can't understand why I am gaining weight have excessive hair growth on my chin when my T4 is 12.86, TSH is 1.75 and Vitamin D is 71. I have had a cold nodule on my thyroid in 95 no longer cold, biopsy done normal. This is frustrating and I can't understand the weight gain and the hair. Any suggestions?