Muscle weakness & shaking (also the inability to concentrate) are also all symptoms of adrenal fatigue - hypoclycemia is often the very first symptom of adrenal fatigue.
Adrenal fatigue & thyroid disease go hand in hand, whenever one is affected, the other is too (even if it doesn't show up in blood work.)
I've had hypoglycemia for as long as I can remember, if I don't eat often enough throughout the day, I get dizzy, shaky & nauseous. While pregnant, I have to carry nuts or animal protein around with me or I'd risk passing out. I also have a very fast metabolism & have struggled all my life with keeping weight on, especially while bfing.
After a period of severe stress last spring (both emotional stress & then the physical stress of having just given birth, bfing & caring for my 2 other children) I developed the mucle weakness & shaking, also chronic muscle pain. It took a whle, but I found an ND & he dx'd me with adrenal fatigue via a saliva test through Diagnos-Techs lab. The bonus, my ND is a member of Price-Pottenger!
There's a thread here in H&H on the first page or two titled "THE Adrenal Fatigue Thread," there's lots of good info in it. In the first 10 posts or so, I posted my saliva results & explained everything I've learned about it since being dx'd, including the supplements I take.
Does your DH take CLO? I'm assuming he does since you're a TF gal.