What to Do If You Forget to Take Your Birth Control Pill? - Obstetrics and Gynecology

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Missed a birth control pill?


Hello doctor, this month I took my second box of the contraceptive pill, and I usually take it every night at 11 PM.
However, yesterday, April 25th, I was too tired and forgot to take it.
I remembered at 4 PM today, April 26th, and I took the missed pill immediately, then took another one at 11 PM tonight.
Is this method correct? I had unprotected intercourse on the night of April 25th, but there was no ejaculation inside.
Is there a possibility of pregnancy?

Chen, 20~29 year old female. Ask Date: 2020/04/26

Dr. Cao Guotao reply Obstetrics and Gynecology


Hello, eating this way is correct, and you should not become pregnant.
Wishing you good health.

Reply Date: 2020/04/26

More Info


When you forget to take your birth control pill, it can understandably cause concern, especially if you've had unprotected intercourse during that time. Here’s a detailed breakdown of what to do in such situations, along with some additional context about birth control pills and their effectiveness.

First and foremost, the general recommendation for missed birth control pills depends on the type of pill you are taking—combination pills (which contain both estrogen and progestin) or progestin-only pills (often referred to as the "mini-pill"). Since you mentioned taking "悅己" (Yue Ji), which is a combination pill, the following guidelines apply:
1. Timing of the Missed Pill: If you remember to take the missed pill within 24 hours, you should take it as soon as you remember. Since you took the missed pill the next day at 4 PM, you did the right thing by taking it immediately. After that, you should continue taking your pills at the usual time. In your case, taking another pill at 11 PM the same day is also correct.

2. Protection After Missing a Pill: If you miss a pill and have unprotected sex, the risk of pregnancy increases, especially if you miss a pill during the first week of a new pack. However, since you took the missed pill within 24 hours, your contraceptive protection should still be effective. The general rule is that if you miss one pill, you are still protected if you take it as soon as you remember.

3. Emergency Contraception: If you are concerned about the risk of pregnancy due to unprotected intercourse after missing a pill, you might consider emergency contraception (EC). EC is most effective when taken as soon as possible after unprotected sex. There are various forms of EC, including the morning-after pill, which can be taken up to 72 hours after unprotected intercourse, and some types can be effective up to 5 days later.

4. Monitoring for Pregnancy: If your period is late or you experience unusual symptoms, consider taking a pregnancy test. It’s advisable to wait until at least a week after your missed period for the most accurate results.

5. Consistency is Key: To avoid missing pills in the future, consider setting a daily reminder on your phone or using a pill organizer. Consistency in taking your birth control pill is crucial for maintaining its effectiveness.

6. Consulting a Healthcare Provider: If you have ongoing concerns about missed pills or your contraceptive method, it’s a good idea to consult with your healthcare provider. They can provide personalized advice based on your health history and needs.

In summary, you handled the situation correctly by taking the missed pill as soon as you remembered and continuing with your regular schedule. While there is a slight risk of pregnancy associated with missing a pill, your prompt action helps mitigate that risk. Always feel free to reach out to a healthcare professional for further guidance tailored to your specific situation.

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