I was prescribed Provera but for the opposite reason you were prescribed it.
I did not have a period for 5 months so they said the Provera would make me have a period 3-10 days after I stopped taking it.
What doesn't make sense to me is that your doctor gave you Provera to keep you from bleeding?
My doctor told me that it is used to "induce" bleeding.
I took 10 mg for 10 days ( I started them on Thursday and stopped them last Saturday). I started my period on Tuesday.
You should contact your doctor and inform him about this.