Either you are being fed on by parasites which allows Candida, bacteria and in the long term cancer develop. Or as you said, Hashimoto's, and I did not have that but was hypothyroid and the doctors over here do not understand and I ended up with slow motility in my Gastrointestinal (GI) tract for two years and minus $ 10,000 and ended up with Parasites, Candida and SIBO (Small Intestinal Bacterial Overgrowth) and 54 pounds lost. Once the thyroid is working right then you need to eradicate parasites and/or Candida and/or Fungus and/or Bacterial Overgrowth (SIBO) if you have. I wish there was an easier way but the problem in our country USA is the government stopped most funding to labs so doctors always tell me no you do not have parasites. They are terrible liars. Best wishes and is always willing to help.