Man, I really messed myself up, I guess. I have been taking the 1...

You need to look up the web site for "Wilson's Syndrom," They have a number of supplements that were developed by Dr. Wilson just for thyroid patients. He has one that addresses the issues you can have with the heart. It would be worth your while to check it out. Can you change doctors? It is worth it to find someone who actually cares about how you feel. Dr. Wilson's web site also offers doctors names who use his program. Maybe there is one in your area. If not, I think you can contact his organization and they will advise you on supplements to help you with your problems. Don't give up, just because you've a few idiot doctors who don't care how you feel, there are good doctors out there who will work with you. Hope you find your answer. Life is short, look for it.