Even if it is just hydration, isn't it pretty cool? 51 is pretty high for pre HRT, maybe you are more girl from the git go than you thought. Something near 100 is about my target range. The kids can have a bit higher before DVT concerns become an issue, but for me less is more. Estrogen for people like me is magic. It has reshaped both my body and my attitude. Spiro gives me leg cramps if I take too much so I'm on a low dose there. But my T levels are practically nil anyway.
Julie