So I took plan b after unprotected sex 3 days ago. Before I took it, my <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">period tracker</a> app says I’m supposed to get my period in 9 days. (April 27)

I am looking to start birth control after my next period.

I know plan b can mess up your cycle pretty bad and I know it can make your period come sooner or later.

Therefore my question is, next time I bleed, should I be good to go to start birth control after that or should I wait two periods ?

I hope that makes sense, thank you!