I Am Taking Norethisterone To Delay My Period For My

I am taking norethisterone to delay my period for my wedding. My period was due on 9th may which I have delayed, when I stop taking the tablets and have my period how can I predict when my period is due in June? Will this be 28 days after this delayed period comes? Or will it not be effected, I am very confused it's the June one I want to change but don't want to take these tablets during wedding