What Is The Usual Time For Withdrawal Bleeding To Occur With Regestrone?

hi i have been on registerone 5mg bd for 5 days and its 3rd day since im waiting for withdrawal bleeding to occur.it had not yet started. what is the usual time for it to occur? furthur i had amennorhea for 3 months and i was given medroxy progesterone actetate 5 mg od earlier for 10 days and had withdrawal bleeding on 2nd day.then again i missed my periods the next month .so i got all the blood tests and USg abdomen done but everythings normal so i was started now on registerone.is there any indiaction to start treatment for a suspected PCOD?