Thanks for the feedback! ;) I am gonna go ahead and follow your advice!
Vitamin D deficiency and thyroid problems can have similar symptoms. Has your doctor recommended supplementing D? TSH is a pituitary hormone and should not be used alone to diagnose and treat thyroid problems. If you want a better understanding of what your thyroid is doing, you should ask your doctor to order FREE T3 and FREE T4 tests. These are the actual thyroid hormones and will give you a much better profile of your thyroid function. Make sure that when they order these, they order free T3 and free T4, not total T3 and total T4.
In addition, you might request thyroid antibody testing to see if you have autoimmune thyroid disease, the most prevalent cause of hypo in the developed world. TPOab (thyroid peroxidase antibodies) and TGab (thyroglobulin antibodies) should both be run, since some of us with Hashi's have one, some the other and some both. Hashi's runs in families.