Hello, a month and a half ago the doctor i see every three months raise my prescription of syntroid from 0,100mg to 0,125mg. Three weeks after i began having a lot of heart palpitations so i stopped the medication for five days and went back to the old dose of 0,100mg. A couple days later the palpitations came back and my pulse was up to 100 bpm. I stopped again and went to see another doctor because the doctor who prescribed me syntroid is not availlable for two months. He told me to take the 0,100mg dose which i did but again the palpitations and fast heart rate came back. I am so stressed i have difficulty sleeping. The palpitations are extrasystoles, i usually have them in the evening or at night, sometimes they are little one but sometimes they are big and really scary ! At the worst time i had about fifty of them in a day. In the last 23 days i was off syntroid for 14 days. Do i still have too much of the hormone in my body ?What do you suggest me ?