I agree to have everything else (thyroid, adrenals, etc.) ruled out. If that all comes back okay, it sounds like a lot of your symptoms may be caused by your lack of estrogen. I don't think that the Lexapro caused any of my symptoms, as a matter of fact I went on the Lexapro because of all of my symptoms (the anxiety and the depression). I, too, had extensive testing done and was always frustrated when I was told "they're perfectly normal". The premarin and the lexapro help me, personally, but I don't think they are a "cure all". Reading all of these posts, especially the "symptoms list" has really helped me. When I start to feel panicky I reread a lot of the posts to remind myself that this isn't fatal and I am not alone!