When to start taking the next pack?

I'm on a combined pill where you take 21 pills and then 7 days of nothing. I'm on the 7th "break" day today and as far as I understood, I should normally take the next pack tomorrow or 8 days after my last active pill. So, if my last active pill was taken on Saturday, I need to start the pills again on the following Sunday.

Is this correct? Am I still protected? I'm a super paranoid person and I'm wondering if maybe I should start taking the new pack a day earlier. Just in case...