Wrong pill.! please .. please help...

So I started taking the pills on the right day a Sunday , and yesterday was Saturday and i accidently took the Saturdays pill after this week thinking it was this Saturdays Pill (they're both blue) today when I took my pill at the time I was supposed too I realized it said Saturday , I don't Know what to do .! Please help , I've never done this before and I am so scared ... Any advice will help please....