I am on T3 under consultation from my Endo and gratefully never felt better for 12 years. But I have recently developed a deepening pain in the front of my neck towards the right hand side, approximately where the thyroid is located. Its probably totally unrelated but it is concerning me slightly. Has anyone else ever had similar and if so any advice. I am not due to see my Endo for another four months. I really don't want to set of alarm bells for nothing or have my T3 withdrawn so am reluctant to ask for help. I wondered if someone on here may be able to throw a light on the subject. Thanks in anticipation.