i have a pain on my right side between the nipple and collar bone and sometimes it seems it travels to the left. been happening about a week. also sometimes it seems like it runs just below the chest and above the rib cage. is it heart or muscle pains. i had a thyroidectomy, RAI, and now am severe hypothyroid with TSH of 17 and being treated with changing does of synthyroid, but these pains just started this week. very scary and i was told in early 2010 i have 40% blockage of artery.