It can take up to 10 days after the last day of the pill.
I was given this medication as well. I took them for five days and five days after my last pill I came on my cycle. I have heard that I could take up to 12 days after your last pill. Give it more time. Im sure it will come!
When I took provera, my period started 2 days after my 10th pill, but my Doctor said that I could start anytime from 2-5 days after... so if you just stopped taking them there is still time.