Emergency Contraceptive Pills and Menstrual Cycle Concerns

Emergency contraceptive pills. Menstrual cycle issues?

I would like to ask the doctor if it is necessary to take emergency contraceptive pills for a long time after the first use.
If I stop taking the emergency contraceptive pills on the day my period arrives, do I need to continue taking them after my period ends? Due to the pandemic, my menstrual cycle has been irregular for a long time, so can I take them if I plan to engage in sexual activity? Should I continue taking the emergency contraceptive pills until the first day of my period?

Cindy, 20~29 year old female. Ask Date: 2021/07/16

Dr. Wu Xianghui reply Obstetrics and Gynecology

Oral contraceptives become effective after one week of consistent use.
It is recommended to take the medication as prescribed or at least continue until the onset of menstruation to avoid disrupting the subsequent menstrual cycle.

Reply Date: 2021/07/16

More Info

Emergency contraceptive pills (ECPs) are a crucial option for preventing unintended pregnancies after unprotected intercourse or contraceptive failure. Understanding how they work and their relationship with the menstrual cycle is essential for effective use.

Firstly, ECPs are designed to be taken after unprotected sex, not as a regular contraceptive method. They are most effective when taken as soon as possible after the incident, ideally within 72 hours, but some types can be effective up to 5 days later. The primary mechanism of action is to delay ovulation; if ovulation has already occurred, ECPs may not be effective.

Regarding your question about the need for long-term use, ECPs are not intended for regular use. If you are looking for ongoing contraception, it is advisable to consult with a healthcare provider about more suitable options, such as birth control pills, patches, or intrauterine devices (IUDs). These methods are designed for long-term use and can provide consistent protection against pregnancy.

If you take ECPs and your menstrual period arrives, you should stop taking them. ECPs are not meant to be taken continuously. If your period is delayed or does not arrive within a few weeks after taking ECPs, it is essential to take a pregnancy test to rule out pregnancy.

In the context of your irregular menstrual cycle due to the pandemic, it is important to note that ECPs can still be taken if you have unprotected sex, regardless of your menstrual cycle status. However, if you are experiencing significant menstrual irregularities, it may be beneficial to consult a healthcare provider to explore the underlying causes and discuss appropriate contraceptive options.

To clarify your concerns about when to stop taking ECPs: you should take them only after unprotected intercourse and stop once your menstrual period begins. If you have taken ECPs and your period does not come as expected, a pregnancy test is warranted.
In summary, ECPs are a valuable tool for emergency contraception but should not be relied upon as a primary contraceptive method. For ongoing contraception, consider discussing long-term options with a healthcare provider. If you have further questions or concerns about your menstrual cycle or contraceptive methods, do not hesitate to reach out to a medical professional for personalized advice.

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