I had my period on jan 10th.i then had unprotected sex on the 14th. took postinor 2 and spotted 7days later. does postinor delay or inhibit ovulation?

About Postinor 2...: Plan B, Postinor 2, and other brands of emergency contraceptive pills can alter the menstrual cycle for the cycle in which Plan B or Postinor 2 was taken, and sometimes the next month's cycle too. One should be sure to check a home pregnancy test about 3 weeks after sex, because emergency contraceptive pills work most of the time, but not all the time. The pills may delay ovulation.