Hi, It is unlikely but i would be careful if you are using this method of birth control. Good luck
Yes, that is not a bad day to get pregnant. Say you have a 5-day flow. Sperm can live for up to 5 more days. That puts you at day 10 of your cycle, and a lot of women can ovulate at day 10. (My sister ovulates as early as day 8.)
It's always possible, BUT the chances are USUALLY slim.