Hi I am struggling at the moment with a constant chocking sensation and reduced airflow. I have very little energy and low mood, every other symptom of hypothyroidism. however blood tests are all apparently within normal range. I’ve recently had a neck ultrasound which showed nothing alarming just a large thyroid, currently awaiting referral. I do have a maternal history of goitre and thyroid surgery. Confused how I can be experiencing such sever symptoms but not showing in blood, has anyone had any experience of this?