Effectiveness of Emergency Contraceptive Pills After Stopping Use - Obstetrics and Gynecology

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Emergency contraceptive pill


I apologize, but I would like to ask if I have been taking the contraceptive pill on time for nine months, and in the tenth month, I took the pill for nine days after stopping it.
Is there still contraceptive effectiveness during those nine days?

Kk, 10~19 year old female. Ask Date: 2023/05/19

Dr. Huang Yuande reply Obstetrics and Gynecology


If you have just stopped taking the medication, it should still provide contraceptive effectiveness for up to nine days.

Reply Date: 2023/05/19

More Info


When it comes to the effectiveness of Emergency Contraceptive Pills (ECPs) after stopping regular contraceptive pills, it's essential to understand how hormonal contraceptives work and what happens when you discontinue their use.

Emergency contraceptive pills are designed to prevent pregnancy after unprotected intercourse or contraceptive failure. They work primarily by delaying ovulation, preventing fertilization, or inhibiting implantation of a fertilized egg. Regular contraceptive pills, on the other hand, maintain consistent hormone levels in the body to prevent ovulation during the menstrual cycle.

If you have been taking your regular contraceptive pills consistently for nine months and then stopped for nine days, the situation becomes a bit nuanced. Generally, when you stop taking hormonal contraceptives, your body begins to return to its natural hormonal cycle. This means that ovulation may occur again, and the risk of pregnancy increases as the hormonal levels drop.

In your case, since you stopped taking the contraceptive pills for nine days, it is likely that your body has started to resume its natural cycle, which could mean that ovulation may occur soon. If you had unprotected intercourse during this time, there is a possibility of pregnancy, as the contraceptive effect would diminish after stopping the pills.

Regarding the effectiveness of ECPs, they are most effective when taken as soon as possible after unprotected intercourse, ideally within 72 hours, but some types can be effective up to 5 days after. However, the effectiveness of ECPs can also be influenced by where you are in your menstrual cycle at the time of taking them.

If you are concerned about the risk of pregnancy after stopping your regular contraceptive pills, it is advisable to consult with a healthcare provider. They can provide personalized advice based on your specific situation, including whether you should take ECPs and what the best course of action would be moving forward.

In summary, after stopping your regular contraceptive pills, the effectiveness of any contraceptive method you were using diminishes. If you had unprotected intercourse during the nine days after stopping, there is a risk of pregnancy. It is crucial to seek guidance from a healthcare professional to discuss your options and ensure you take the necessary steps to protect your reproductive health.

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