I can't see your pics, so I can't comment...however, I had thyroid cancer as a young lass and am now on thyroid meds forever. Since you said your doc just changed your dose, I'd probably try to just hang in there a little bit longer--when the med adjustment kicks in, you'll feel better.
Also, if my dose is off, i will feel like I have a neuromuscular-connective tissue disorder, too. I feel like I am "tough meat"--it's weird to describe, and very uncomfortable. Make sure you have your levels checked regularly--it will help! (But you are an RN--you already know this...jsut trying to offer some support.)
When I was 270 and very fat, with almost no muscle, it was murderous to try to get the ole bod moving the first few times--but I did it! After you start working those muscles, in your legs and calves, your muscles will "find themselves", and the work will get easier...eight months later I feel like the Hulk because I can feel my muscles working, and that is truly an new experience! (Unfortunately, I still look like a big ole hulk, but progress is being made there, too!)
Hang in there, hunny--the folks on this forum will guide you and help you and you'll be right where you wanna be in a few months! You'll see!