Do I have to start the pill on Sunday? Or any day when my period ends?

BeBe • ✨

So I just started my period on Thursday & they usually last about 4-6 days.

It tells me I should start the pill the Sunday after my period so should I start them Sunday the 30th or should I just start them this Sunday? 🤔

I am very confused with the starting on Sunday because say I end my period on Monday, then can I start taking the pill Monday or do I have to wait till the next Sunday?

Thank you lol