Can You Take Both Pre and Post-Coital Pills Together?

Can they be taken together before and after?

Hello doctor, I have been taking the oral contraceptive pill (Yaz) for four days.
During the safe period, I had unprotected intercourse but accidentally ejaculated inside.
Do I need to take emergency contraception? Can I take both the regular and emergency contraception together? If I don't take the emergency contraception, is there a high chance of pregnancy? Thank you.

Nìmíng, 20~29 year old female. Ask Date: 2023/03/11

Dr. Zhang Kunmin reply Obstetrics and Gynecology

Hello, if it is your first time taking birth control pills, you should use an additional method of contraception as a backup.
If it is not your first time and you take the pills at the same time every day, you can achieve a 99% effectiveness in preventing pregnancy.
Thank you! Wishing you peace and health.
Dr.
Chang

Reply Date: 2023/03/11

More Info

When it comes to the use of pre-coital (oral contraceptive pills) and post-coital (emergency contraception) pills, it's important to understand how these medications work and their implications for your health.
Oral contraceptive pills, like the one you mentioned (悦已), are designed to be taken daily to prevent ovulation, thereby reducing the chance of pregnancy during unprotected intercourse. These pills are most effective when taken consistently and as directed. If you have been taking your oral contraceptive pill for four days and are in your "safe period," the likelihood of pregnancy is significantly reduced, but not entirely eliminated, especially if you had unprotected intercourse.

Emergency contraception pills (ECPs), on the other hand, are intended for use after unprotected intercourse or contraceptive failure (like a broken condom). They work primarily by delaying ovulation, preventing fertilization, or preventing a fertilized egg from implanting in the uterus. The effectiveness of ECPs is highest when taken as soon as possible after unprotected intercourse, ideally within 72 hours, but some types can be effective up to 120 hours after.

Now, regarding your question about taking both pre-coital and post-coital pills together: it is generally safe to take emergency contraception even if you are already on regular oral contraceptives. The emergency contraceptive will not interfere with the effectiveness of your ongoing birth control method. However, it is important to note that taking ECPs can lead to some side effects, such as nausea, fatigue, or changes in your menstrual cycle, which may be compounded by the hormones from your regular contraceptive pill.

If you choose not to take the emergency contraception, the risk of pregnancy depends on several factors, including the timing of your menstrual cycle and how consistently you have taken your oral contraceptive. If you are in the "safe period" and have been taking your pill correctly, the chances of becoming pregnant are relatively low. However, if you are concerned about the possibility of pregnancy, taking the emergency contraceptive can provide peace of mind.

In summary, it is safe to take both pre-coital and post-coital pills together. If you are worried about the risk of pregnancy after unprotected intercourse, and especially if you are unsure about the effectiveness of your oral contraceptive during that time, taking the emergency contraception is a reasonable option. Always consult with your healthcare provider for personalized advice and to discuss any concerns you may have regarding your contraceptive methods. They can provide you with the best guidance based on your specific health needs and circumstances.

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