Have under active thyroid , been taking 225mcg of levothyroxine now since December. My tsh levels are all over the place , went from 93.6 one week to 18.7 the next. Have had chest pain on and off for a few weeks . ECG in doctors put me at the eau of the local a&e with rbbb? But all tests in the unit were fine. Awaiting urgent appointment with endo but been cancelled also have multi nodule goiter which makes it hard to swollow pills and have constant sore throat.feeling rubbish all the time . can anyone help. Back to go in morning about chest pain and to try to get to to help get appointment quicker than 3/3/16 was sent to go 14/1/16 but it was cancelled .