Hello, I have gone through your query and understood the concern. In the manner described, you have no reason to worry about possible conception. The emergency contraceptive pill contains high hormone dose and as a result, you can expect side effects like nausea, vomiting and some withdrawal bleeding after a couple of days. Your next natural period also may get delayed by a week or two. So, if you happen to become overdue by ten days, please contact your gynecologist for further support. Also, please remember, emergency pill use has to be restricted to once or twice a year to avoid future hormonal imbalances. Hope this helps.