Birth Control Newbie

Hi.. i was just wanting some clarification. I can’t remember what my pharmacist said and reading the “instructions” wasn’t super helpful.

I recently got prescribed bc, i know the pink pills are “active” and the white ones are “reminders” my question is when do I start my second box? Right aftet I finish this one or do I have to wait until I get my period, then start taking it or at the end of my next period cycle to start the new box?