Missed Birth Control Pill: What to Do and Pregnancy Risks Explained - Obstetrics and Gynecology

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Missed taking the contraceptive pill during the third week?


Hello, doctor.
I have been taking the contraceptive pill for the second month, and on the 19th day, I forgot to take it.
However, I had unprotected intercourse that day and took the missed pill within 12 hours.
May I ask: 1.
Should I continue taking one pill on the 20th day as usual? 2.
Is there a possibility of pregnancy? Do I need to take emergency contraception? 3.
After finishing this pack of pills, should I take a 7-day break before starting the next pack, or should I continue taking the next pack without a break? (I found information online suggesting that if a pill is missed in the third week, it is recommended to skip the break and start the next pack directly, or to take a 7-day break plus the number of missed days before starting the next pack.)

V, 20~29 year old female. Ask Date: 2020/07/28

Dr. Cao Guotao reply Obstetrics and Gynecology


Hello, on the twentieth day of taking the medication, it is unlikely that you will become pregnant.
After finishing the medication, you can start taking the next cycle of birth control pills on the fifth day after your period begins.
Wishing you good health.

Reply Date: 2020/07/28

More Info


When it comes to missed birth control pills, it’s essential to understand the implications and the necessary steps to take to minimize the risk of unintended pregnancy. Here’s a comprehensive response to your questions based on medical guidelines and practices.

1. Should you continue taking your birth control pill as normal on day 20?
Yes, you should continue taking your birth control pill as scheduled on day 20. After missing a pill, the general recommendation is to take the missed pill as soon as you remember, even if that means taking two pills in one day. Following this, you should continue taking your pills at the regular time. This helps maintain the effectiveness of the contraceptive.

2. Is there a possibility of pregnancy, and do you need to take emergency contraception?
There is a possibility of pregnancy if you had unprotected intercourse after missing a pill, especially if the missed pill was in the third week of your cycle. However, since you took the missed pill within 12 hours, the risk of pregnancy is significantly reduced. Emergency contraception (like Plan B) is typically recommended if you miss a pill and have unprotected sex, especially if the missed pill was during the last week of your pack. However, since you took the missed pill promptly, you may not need to take emergency contraception, but it is always best to consult with your healthcare provider for personalized advice.

3. Should you take a break after finishing this pack, or continue with the next pack immediately?
The standard recommendation is to take a 7-day break after finishing a pack of birth control pills before starting the next pack. However, if you missed a pill in the third week, some healthcare providers suggest skipping the break and starting the next pack immediately to maintain contraceptive effectiveness. This approach helps prevent ovulation and reduces the risk of unintended pregnancy. It’s important to follow the specific instructions provided by your healthcare provider or the guidelines that come with your birth control pill.


Additional Considerations:
- Understanding the Pill’s Mechanism: Birth control pills work primarily by preventing ovulation. If you miss a pill, especially in the first three weeks of your cycle, the risk of ovulation increases, which is why timely action is crucial.

- Regular Monitoring: If you frequently forget to take your pills, it may be worth discussing alternative contraceptive methods with your healthcare provider. Options like the IUD, implant, or injection can provide more consistent protection without the daily commitment.

- Consulting Your Healthcare Provider: If you have any doubts or experience any unusual symptoms (like spotting or changes in your menstrual cycle), it’s important to consult with your healthcare provider. They can provide tailored advice based on your health history and the specific type of birth control you are using.

In summary, continue taking your pills as scheduled, monitor for any signs of pregnancy, and consult your healthcare provider for personalized advice regarding your contraceptive method. It’s always better to err on the side of caution when it comes to reproductive health.

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