My wife started her last menstrual cycle on the 22nd of the previous month. We had protected sex on the 27th of the previous month. Unfortunately, the condom ruptured but, I was able to pull it out a few seconds before ejaculating. Just to be safe, she took an I-pill seven hours after intercourse. She had light spotting after a week which lasted for three days. It has been almost a month since her last period and she is not showing any signs of PMS. Is there any possibility of pregnancy?