I was taking the pills all the way through; I took all the white, and then all the light blue, and then started on the dark blue. I lost a pack so I opened a new one and started off from where I'd left off. I realized after a few days that I'd started talking the light blue pills after the dark blue, when I was supposed to be taking the green. I had sex a few days before my period was supposed to start, and I am two days late. Is this because of the sex, or because of the color of pill I mistakingly took? What do I do?