i had ultrasound of thyroid yesterday as i asked my doctor two 3 weeks ago to have an ultrasound to see how healthy my thyroid gland was. so glad i asked, dr found two nodules my left side has enlargement 6cm x 3cm, the biggest nodule was 6mm and smallest nodule 3mm the right side was only 3cm by 2cm enlarged, he said over 95% are benign. im awaiting full results by letter within a week. should i be worried? and i think I may ask for FNA biopsy or is that not neccessary. im 37 years old female with TSH 6.7 now on 50mg of levothyroxine, waiting for increase in few weeks and blood test.