If you took the original 100mg utrogestan vaginally then it might work, one of the menopause doctor podcasts that I listened to said that it is up to ten times more effective if placed where it's needed because it is already bioidentical and doesn't need to be digested (provera does) which just wastes it on the rest of the body.
I had the most horrific experience with provera, I was suicidal at the flick of the provera switch, not normally, normally I'm happy.
That wasn't all happened (at 10mg a day for 12 days a month).
Provera gave me a flu like illness I couldn't shake, I was off work and in bed, couldn't function at all. I phoned the GP who said it wasn't because of the provera, I must have a flu like illness...
I didn't, it was provera, at 10mg. I tried 5 mg the next month, almost as bad as 10mg, not any discernible improvement by halving the dose.
I phoned the GP again and we argued about whether or not I was having a reaction at all!
How long did it last? After five days I was 80% better, the rest of the feeling took a good month to pass, all after I put my foot down and simply refused to be poisoned again.
So I lost my oestrogen prescription.
I don't do well with progesterone in any circumstance, I'm on tibolone now, it's good.
PS Provera didn't even control my bleeding, I bled when my body decided to while taking any HRT, bleeding during provera days wasn't a problem and I was well past menopause, HRT seems to make most women bleed regardless from what I've heard anecdotally.