First time, advices?

Puggie

So its my first time taking pills, and I kinda think that I did a stupid thing. My pills are monofaziscs, normal ones, and on the packeching are written the days. Not to forget, there are 21 pills.

My question is: If I took like.. the pill from tuesday (but my period came on monday) Should I be worried? Or they have equal amount of hormones?

Thank you😊