When Should I Start Taking Estranor After Using Primolut-N To Regulate My Menstrual Cycle?

So I was got married on 24 April and my periods last date was 10 of April today is 2nd of June and I didn t got my period still but I have taken Primolut N pills to get my periods and I want to maintain my menstrual cycle so I can get my periods on time ... Now how and when can I take the Tablet Estranor ? .... Should I start It the first day of my periods or after the end of my periods ?