When to start next birth control

I just started taking Junel 1/20 (21 pill pack) this month and I end my pack today (5/11) and my period wasn’t due till Wednesday so i was originally supposed to take the pill next Sunday. However, today is Saturday and my period came early. Would I start my pill tomorrow since it says start the first Sunday of your cycle or do I wait the week because I would technically be taking the placebo pills this week.