Hi there
Provera can be used to bring on AF but also to stop AF if you've had it for awhile.
Weird I know!
When I get prescribed Provera it's to bring on an AF for TTC.
Could go to ways about getting it when visiting the dr;
Say you are TTC again and wanted to bring on AF to get the ball rolling
or
Say you haven't had an AF for 5 mths and wanted to have an AF cos you wanted to make sure down there has a bit of a clean out (it was suggested to me a few years back that I have this as I don't have a natural AF, the dr reckoned women need to have a bleed at least once a year to keep things healthy inside -not sure if that is true).
Hope that's the kinda thing you were wanting ???
Good luck with TTC!