I'm a virgin and still dont wanna get knocked up... by a one night stand.I am not well educated when it comes to sexual intercourse. I had an unsafe sexual intercourse with a guy last night. In addition, it was the 2nd day of my ovulation. After 15 hours i went to see a doctor and i ask for a contraceptive. And then she gave me this medication called lo-ovral (28). I want to know the possibilities of me not getting pregnant? And how effective this medication..