Hi sparkle,
This happened to me whilst on clomid. I rang my FS on CD35, as my information leaflet from the hospital advised.
I told them my problem, they took my details and checked with the doctor. The doctor told me to phone back in 10 days if nothing had happened.
So CD45 I phoned and was told to come up the next day for a scan to see what was happening. Turns out I'd just ovulated but they didn't hold out much hope of that being successful because after 6/7 weeks, the womb lining is not at its best any longer for receiving a fertilised egg.
So, to get to the point of my little ramble, leave it a few more days to see if anything happens, and then maybe move onto your Provera.
I've been told clomid isn't classed as being successful unless u ovulate somewhere around CD14, give or take a few days.
If in doubt, ask the doctor x