Ok heres what happened

i was suppose to start my new pack of pills on sunday and I took it on friday instead, I wasn't even thinking and took it. I haven't took anymore cause I didn't know what to do. I'm a sunday starter and would like to keep it that way if I could, I was going to take the other pill tonight(monday) and act like I never took the other one early but I didnt know if it would mess me up. If anyone knows what I should do please tell me. Thanks