Missed Birth Control Pill: What to Do and Its Impact on Effectiveness - Obstetrics and Gynecology

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Missed contraceptive pill and stopping the medication early?


Hello, I started taking the contraceptive pill Alesse on June 27, but I forgot to take it yesterday, July 10, while I was away from home.
I usually take it at 11 PM.
I will be back home tonight, July 11, between 7 and 8 PM.
Should I take two pills at once? Will the contraceptive effectiveness for this month be reduced? Or should I just stop taking it and wait for my period to start before beginning a new pack? If I stop taking it now, will my period come immediately? If I start taking the pill again on the 5th day of my period, will I have full contraceptive effectiveness after taking it for 7 days?

ling, 20~29 year old female. Ask Date: 2015/07/11

Dr. Lin Manying reply Obstetrics and Gynecology


If a contraceptive pill is missed, taking it within 24 hours will not reduce its effectiveness.
It is recommended to take two pills at once the following month.

Reply Date: 2015/07/11

More Info


When you miss a birth control pill, it can understandably cause concern regarding its effectiveness and your overall reproductive health. Here’s a comprehensive guide on what to do if you miss a pill, its impact on effectiveness, and some additional insights into birth control methods.

First, if you miss a pill, the general recommendation is to take it as soon as you remember. Since you mentioned that you forgot to take your pill on July 10, you should take it as soon as you return home on July 11. If you remember within 24 hours, you do not need to take two pills at once; just take the missed pill and continue with your regular schedule. However, if it has been more than 24 hours since you missed the pill, the advice may vary slightly depending on the type of birth control pill you are using (combination pills vs. progestin-only pills).

For combination pills (which contain both estrogen and progestin), if you miss one pill, take it as soon as you remember, and then continue taking the rest of the pills at your usual time. If you miss two or more pills, you should follow the instructions provided in your pill pack, which often recommend using a backup method of contraception (like condoms) for at least seven days after missing the pills.
In your case, since you missed only one pill, your risk of pregnancy remains low, especially if you take the missed pill as soon as you remember. However, if you miss pills frequently or are concerned about the effectiveness, it may be worth discussing with your healthcare provider about alternative methods of contraception that might better suit your lifestyle.

Regarding your question about stopping the pills and waiting for your period: if you stop taking the pills, your period may not come immediately. It can take a few days to a week for withdrawal bleeding to occur after stopping the pill. If you choose to stop and wait for your period, you can start a new pack of pills after your period begins, but remember that you will need to use backup contraception for the first seven days of the new pack to ensure effective protection.

It's also important to note that the effectiveness of birth control pills can be influenced by various factors, including missed doses, gastrointestinal issues (like vomiting or diarrhea), and interactions with other medications. Therefore, maintaining a consistent routine for taking your pills is crucial for maximizing their effectiveness.

In summary, since you missed one pill, take it as soon as you can and continue with your regular schedule. You do not need to take two pills at once. Your risk of pregnancy remains low, but if you miss pills frequently, consider consulting with your healthcare provider for personalized advice. If you decide to stop taking the pills, be prepared for a potential delay in your period and remember to use backup contraception during the first week of a new pack. Always consult with your healthcare provider for the most accurate and personalized guidance regarding your contraceptive method.

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