Emergency Contraception: Do You Still Need to Track Ovulation?

Emergency contraceptive pill

Hello, doctor.
I would like to ask about my current situation.
I have been taking the contraceptive pill, Yejih 21+7, for over a month now, and I have been taking it regularly.
My menstrual cycle has also been consistent.
Now that I am into my second month of taking the pill, I still habitually use an app to track my fertile days.
However, during the time the app indicated my ovulation period, my boyfriend accidentally ejaculated inside me.
I would like to know if this could lead to pregnancy.
If I am consistently taking the contraceptive pill, do I still need to pay attention to my ovulation period before engaging in sexual intercourse?

Sharon, 40~49 year old female. Ask Date: 2022/03/17

Dr. Zhang Kunmin reply Obstetrics and Gynecology

Hello, the combined oral contraceptive (COC) must be taken at the same time every day.
When taken correctly, it can achieve a 99% effectiveness in preventing pregnancy.
The components of the contraceptive work by suppressing ovulation to achieve its contraceptive effect, so the key point is to take it on time.
Thank you! Wishing you peace and health, Dr.
Zhang.

Reply Date: 2022/03/17

More Info

When it comes to understanding emergency contraception and the role of ovulation tracking, it’s essential to recognize how hormonal contraceptives, like the one you are currently using (Yaz or a similar combination pill), function. These pills are designed to prevent ovulation, thicken cervical mucus, and thin the uterine lining, making it less likely for a pregnancy to occur.

Since you have been taking your birth control pill consistently and correctly for over a month, you are likely well-protected against pregnancy. The effectiveness of combination oral contraceptives is very high—around 99% with perfect use and about 91% with typical use. This means that if you take the pill as directed, the chances of becoming pregnant from unprotected intercourse are extremely low, even during the time your app indicates you may be ovulating.

Regarding your question about whether you still need to track ovulation while on the pill, the answer is generally no. The primary purpose of tracking ovulation is to identify fertile windows for those trying to conceive or to avoid pregnancy without hormonal contraception. Since the pill works to suppress ovulation, tracking ovulation becomes less relevant. In fact, if you are taking your pill consistently, you can have unprotected intercourse without the need to worry about your ovulation cycle.

However, it’s important to note that if you miss a pill or take it late, your protection may be compromised, and you could be at risk for pregnancy. In such cases, emergency contraception (like Plan B or Ella) can be used if you have unprotected intercourse, but it is not necessary if you are taking your pills as prescribed.

If you have concerns about the effectiveness of your birth control or if you experience any side effects, it’s always a good idea to consult with your healthcare provider. They can provide personalized advice based on your health history and current situation.

In summary, if you are taking your birth control pills correctly, you do not need to track ovulation, and the risk of pregnancy from the incident you described is very low. If you have any further questions or concerns, don’t hesitate to reach out to your healthcare provider for more information and reassurance.

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