I was diagnosed with Hashimoto's thyroiditis a year ago and have been on levothyryxine since. My dosage was increased earlier this year and my TSH and T4 levels recently showed as normal despite still having many symptoms - hair loss, brain fog, fatigue, anxiety, weight gain. I've now been diagnosed with anxiety and depression and am having CBT. But I know the root cause is my thyroid. My GP says its stress and will not test for T3 - how can I get this test or be referred to an endocrinologist if my GP insists I'm fine?