Me too.
Pre-op, I was on a high dose of Premarin for many years (not without other side-effects)...
Post-op, now on estradiol valerate and hair loss is just one problem I've been facing. Endo says everything's fine by the numbers but when you know in your heart of hearts that it isn't, it's difficult to make headway against such individuals.
Should post-op women be treated identically to menopausal women? Because to me, this seems to be the paradigm that many of us are treated under, as well as being often treated under a one-size-fits-all model depending on the clinic, despite the wide variation of regimes used by reputable centres and practitioners worldwide.
Regardless of all that, as a starting point, you should go back to your doctor/GP/primary healthcare professional.