I am coming to this thread very late, but I also have Hashi's. I had to fight my PCP just to be tested. It was my psychiatrist who actually put all the pieces together (long term hypo, colitis attack, etc.). One thing that may help is going gluten free. Apologies if this has already been brought up in this thread. Thyroid issues are simply miserable, as is Hashi's. it is hard to deal with a moving target.