Patient's question:
After sexual intercourse, I took the post-coital pill within three days, but I still got pregnant. Why? Will this affect the baby?Doctor's answer:
The reasons for failure include:1. Sexual activity during medication. Women should take a second pill 12 hours after the first pill. If sexual activity occurs within this 12-hour interval, it may affect the effectiveness of emergency contraception.
2. Multiple sexual encounters within 72 hours.
3. Uncertainty about the time of the first pill intake. The first pill must be taken within 72 hours after sexual activity.
4. Exceeding the 12-hour interval between the two doses.
5. Using emergency contraception as regular birth control.