Better to find and fix than to go undiagnosed.

Yes, low thyroid can do a lot of that, too. So many things have overlapping symptoms, and often go together. Did you already know you had thyroid disease and just needed dose adjustment, or is it a new diagnosis for you? Here is one of the best places for thyroid info:
http://thyroid.about.com/

Anemia can be due to low iron or low B12 or both. Did he say?
http://www.labtestsonline.org/unders...ns/anemia.html

I hope you will have improvement once these things are treated! Let us know what more you find out and how you are doing. You will feel better!