Why can the morning after pill make your next 2 cycles shorter, like 10-15 days (normally they 27)? Does it mean you didn't have ovulation?

Abnormal bleeding. Emergency contraception is used after unprotected intercourse to decrease the risk of pregnancy by about 70%. It is a high dose of birth control to disrupt the hormonal patterns to delay or prevent ovulation. Abnormal bleeding or an abnormal cycle after use is common. Check preg test in 10 days.