I was diagnosed as hypothyroid in May following birth of second child. My TSH was over 100 and my T4 3.1. Despite my TSH being normal for about 6 weeks I still felt terrible with constant leg pains. My consultant was very unhelpful but GP sympathetic and prescribed Erfa thyroid. For 3 days felt great, then really short of breath. Now taking 2 grains or Erfa and 50 micrograms of levothyroxine, but pulse rate and symptoms seem to change throughout day. I have 2 small children and can't enjoy them. Has anybody had a similar experience or have any advice? I'm really at the end of tether and when short of breath or have palpations very scared. Thought I was going to die twice at very start of diagnosis. finding it very hard to cope now.