Late 13 hr to take the 5th coc pill of the first cycle (day 5 of the cycle) if having sex at day 9 so it is not the ovulation date of the usual cycle assume it is the worst case : ovulated can taking pill incorrectly lead to early ovulation?

Pregnancy test: A missed or late pill can cause your natural hormones to take over and allow ovulation. Hormonal oral contraceptives works by raising the levels of hormone cause your body to not ovulate. No ovulation means you can't get pregnant. Although the chance is low, if you ovulated and had sex in the fertile window, you could be pregnant. Take a pregnancy test and if negative, continue taking your pills.