Hi Hvenab, it's possible that the progestogen in the Evorel Conti/Sequi patches is wrong for you. The norethisterone they contain is derived from testosterone & some women find this causes them to shed hair. That said, we can lose hair for other reasons & it is unfortunately normal for hair to thin to some extent as we age, but I imagine as you are posting about it, yours is more than you'd expect.
Might be worth switching to an HRT regime with a different form of progesterone. The dydrogesterone in Femoston is considered "kinder" & the body identical micronised progesterone in Utrogestan is also not an androgenic form. That said, we all react differently & I think I remember reading that some women on MM have found testosterone helps their hair, so I'm afraid it's a case of trial & error.
Just a thought - do you have a thyroid condition, as this can cause hair loss?
There are women who post here with far more knowledge about hair loss than me, so with any luck they will be along to give some good advice. I just saw you'd had no replies yet & didn't want you to feel alone with it. I hope you manage to get it sorted.