If you started taking pills when your period ended then you were not protected in the following 7 days. As I could understand from your post you had sex exactly in those 7 "unsafe" days so I think you did well when you took emergency contraception ("morning after pill" or "plan B"). If you get some withdrawal bleeding in the next few days after you took "morning after pill" that means that the emergency contraception was successful. If you don't get any vaginal bleeding you can do a pregnancy test 15 days after the sexual intercourse. In the mean time you can avoid sex or use condom.
It's not a problem if you took "plan B" and regular pill in the same time but it could be a problem if you continued taking regular pills after you took "plan B". That could affect the effectiveness of "plan B".
Did you get any vaginal bleeding or spotting after you took "plan B"?