My doctor, who is very sweet and helpful, called me today to inform me that my TSH is dangerously low (less than 0,01) and told me that I should probably stop taking T3 because I could have heart problems in the future. I told her that I feel much better now and that my heart palpitations have stopped. I used to have them when my TSH was higher. She is genuinly worried about me, and I'm not sure what I should do. Any advice? I'm also on 100 mg.