Molly, I may be an unusual case in that I need very little progesterone to get very good womb lining clearance - this has been confirmed by post bleed scans. No doctor will ever sanction that dose but the point is, everybody is different. There are many women who take the recommended dose of progesterone and still have a thick womb lining and they seem unable to get it down to 3mm despite heavy doses of synthetic progesterone.
The takeaway from this is don't guess how much progesterone you need, find out. You could be lucky and get away with a low dose or equally you could be unlucky and need a high dose but there is no point in overdosing on the stuff for years on end if it makes you ill.
The progesterone component is the main reason women are forced to stop using HRT altogether which is completely unnecessary if there is a way around it.
Thanks MARY G. Yes you are right, its a case of finding out how much I need before I give up HRT altogether., thanks for your reply x