Provera & clomid

Julia
I have irregular periods and most cycles don't ovulate. This is the case for this cycle. I did have a period last month - I'm on cd28 of this cycle but have not ovulated. My doctor is putting me on provera and then clomid. 
​I'm curious about the provera - if I am in fact meant to get a period on my own in the next 10 days will it affect anything if I take provera to bring a period on? It sucks because of course I don't know if I'm due to get one or not...