Since you already have a rheumy, you can start out with him. Have him run some more testing as well as review ALL of the medications, herbs, and vitamins you are taking. It could very well be a side effect of medication.

In the meantime, check out some endocrinologists in your area and get some recommendations. This way you have one already picked out should you need one.

I wish you the best and please let us know how everything turns out.