My pdoc is having me go in for a full set of thyroid tests. I'm always cold too, but I've been that way ever since I went through menopause. My TSH is normal and always has been, but there are other tests that are more sensitive to high or low thyroid hormone and it's those he wants to look at. Of course, we both know that even if I turn out to be hypothyroid, I'll still be bipolar. LOL