hi my last period was on the 18 of june. i have unprotected sex on the 16 of july and i took the emergency contraceptive pill on the 17 around 12 noon. now this month is almost finish and my period havent started as yet..... does thos means that i could

Hello Moya,

Welcome to the EmpowHER community. Thank you for coming to us for advice.

An emergency contraceptive prevents pregnancy by preventing ovulation.

If your menstrual cycle is 28 to 30 days, you would have probably been ovulating around July 2 or 3. If your period for July was due to start around the 18th, there was no risk for becoming pregnant during unprotected intercourse on July 16.

An emergency contraceptive contains a high dose of levonorgestrel, which is a manmade or synthetic hormone. It works to prevent your ovary from releasing a mature egg.

It is possible that you cause an upset in the balance of hormones that naturally control your menstrual cycle. That could explain why you have not gotten your period.

Since it has been over three weeks from taking the pill, and no bleeding or period, test for pregnancy. Test in the morning. Use the urine when you first get up. Then contact your gynecologist about all of this.

Regards,
Maryann