I guess you went to ER. I can't even feel my heart rate at 130 bpm which I guess is pretty weird. :)
The herbs bugleweed and lemon balm can help reduce the production of thyroid hormone and Motherwort can help regulate rapid heartbeat.
Over consumption of uncooked goitrogenic foods can depress thyroid activity: brussels sprouts, cabbage of all kinds, cauliflower, kale, kohlrabi, peaches, pears, rapini, spinach, strawberries, radishes, rutabagas, turnips, soybeans, pine nuts, peanuts, millet, rape seed (canola oil).