The first Saturday of November 2016, I had sex. It was two days after I finished my period and pack of birth control. The night it happened I took plan b and promptly puked it up, so the following day I took two more Plan B pills nine hours apart along with a new pack of birth control. Two weeks later I had a period that was a little lighter, and lasted nine days versus the normal seven. After it was finished I continued taking the last row of normal pills, now I'm taking the period row and still haven't had my period. What's the likelihood of being pregnant even though I had the slightly different period a little over a week ago?