I was put on medroxypr ac 10mg to have a period to start beyaz and it still hasn't started, I was given 5 pills started Monday, ended Friday, and it is now Sunday and no period.

You may need another course or a longer course. Was any sort of testing done to determine a cause for the lack of or irregular periods? It is common for the provera to be used to try and start up cycles, or help to regulate them, but there can be other causes for which the provera won't be effective. Your doctor will likely do some hormone testing if another round doesn't achieve the desired results.

Did you start the Beyaz already? If so that may have effected a bleed.