Hi!

So I have been on Tri-Previfem/ OrthoTri-Cyclen for about two months now. I accidentally took week 4 as week 1 without noticing (shame on me, I know). I had the pack switched upside down and I usually do not look too close at the week/day/color I am on. Should I be worried about becoming pregnant? I obviously started taking week 1 as soon as I noticed but still...