Oral emergency contraceptive pills in the morning can only have a contraceptive effect on sexual intercourse within 72 hours before the pills are used, and having sex again after taking emergency contraceptive pills cannot have a contraceptive effect. If you are ovulating at this time, having intercourse again may cause an unwanted pregnancy, so if you do not want to take the risk, you can take the emergency contraceptive pill again. However, the emergency contraceptive pill should not be taken more than 2 times in a month to avoid confusion of menstruation and it is recommended to observe. If you are not ovulating, you can buy an early pregnancy test about 12 days after intercourse to rule out any pregnancy.