Birth control

C

My dr gave me the mini pill since I’m exclusively pumping. It says on the package to take the day your period starts. dr said take it 2 weeks postpartum. I was 2 weeks on Tuesday and started it Wednesday. I couldn’t find anywhere that said how long to take it before it takes affect (of course, still waiting for the clear from my dr) but just want to be extra sure lol. Anyone have any insight?