Hi jacci48
![welcomemm :welcomemm:](https://www.menopausematters.co.uk/forum/Smileys/extended/welcomemm.gif)
if your oestrogen levels are sufficiently high to cause thickening and polyps, despite being post-menopausal then it does sound a bit like a sort of period - you haven't said how old you are? Did you have normal regular periods in your fertile years or have they always been sporadic?
It sounds like you may well benefit from a dose of progesterone every now and again so that you can shed the lining properly, otherwise you could be at risk from endometrial cancer in the long term.
Maybe for example you could take utrogestan twice a year ( depending on how quickly your lining is thickening) or maybe a little more often?
Yes I expect they will do a blood test although one test isn't very reliable on its own.
Hurdity x