Starfish, are you definitely menopausal any chance you could still be peri?
I can't help about polyps but I can say my experience with Utrogestan, (being peri).
When I was on sequi with 200mg Utrogestan on 12 days per month, like you, I always bled whilst taking the Utrogestan. For me, I bled before the 12 days was up. It never led to a withdrawal bleed as such, as in , starting a bleed a few days after I stooped it. Also for me, it never stopped my own periods, so, because I could never synch the bleeds I had both a lot of the time. Anyway I ended up anaemic.
Even though I was still peri they put me on to continuous , to take 100mg Utrogestan every day which was supposed to stop my 'bleeding' . (Long story but the doctors didn't recognise my regular predictable bleeds as periods but I know they were).
As I say this was supposed to stop my 'periods' but it didn't. I still bleed regularly, predictably, for set length with PMS beforehand and no spotting in between or anything worrying besides my age alone, so yeah, still periods.
The reason they don't recognise my bleeds as periods is purely down to age. I'm 61 now, still bleeding on continuous but they are getting lighter each time so fingers crossed will finish soon. They have just put me up to 200mg per day so hoping that MIGHT stop the bleeding.
So, just to say, IF you are still peri at all, it likely won't stop your own activity, if you still have it going on, as utrogestan is quite a weak progesterone compared to synthetic at controlling bleeding, so I understand.
Good luck and hope you get sorted!
