In addition to the excellent advice given by Taz, I would also add that there is no reason not to take utrogestan cyclically whether or not you are post-menopausal (unless eg you have history of endmetriosis) - which I presume you are if the doc wants you on conti HRT. This will give you a regular bleed as Taz says but I agree with her that irrespective of whatever regime you are on, very heavy bleeding should be investigated even though bleeding is to be expected when you first start a conti regime, and even if it has stopped now.
I have only ever taken utrogestan vaginally. The normal licensed dose is 100 mg daily for conti use but this can be increased for higher doses of oestrogen and if there is bleeding which continues. If you continue to bleed when taking Utrogestan daily, even after 6 months then it may not be the right regime. So in summary, higher dose or cyclically would be the solution.
Hurdity x