Are Delayed Menstruation And Abdominal Pain After Taking Unwanted-72 Normal?

We had sex on the 30th day of the cycle i.e. on the 24th of April, the condom was broken but no seman was discharged only precum was discharged then we changed the condom. After 20 min of sex, she took the Unwanted-72 on the same day i.e. on 24th April. Now she is observing abdominal pain and her period date was also 24th April and today is 27th April, her period is delayed by 3 days. Can she take mensol syrup to induce period? Is it normal? Is there any chance of pregnancy?