How A Period Should Look How Soon After Starting The Placebo Pills Should My Period Start?

How soon after starting the placebo pills should my period start? - how a period should look

This is my second month on birth control. I are sexually active, I am very careful with moves at the same time every day. I took the placebo pill on the first day of last night, and I have not started my period. My question is: How soon after starting the placebo pills to start my period?

- Last month was abnormal, I was in a period of 3 weeks.

So I have a feeling I will soon begin, and my face is coming out. All major factors for me when to start my period.