This sounds like a LOT of big changes, in a short time. Even so many good ones is bound to be a stress on the system. Seems to me it would surely prompt some discomfort... Since you are open to the the thyroid-talking (I've done some of that myself... )you might like to try some EFT. Lots of videos online to go through the basic points. It's energy meridian work, and can really help (in my experience) with the 'rough patches'. The fun thing about it is, the more forthright and honest you are about whatever is coming up, the better it works.