Accidentally Overdosed on Birth Control: What to Do Next? - Obstetrics and Gynecology

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I took five extra days' worth of birth control pills?


Hello, a few days ago I took 10 pills of my 21-day oral contraceptive when my dog accidentally ate them.
After that, I bought a new box and continued taking them, but I accidentally took an extra five days' worth, totaling 26 pills.
I stopped taking the pills immediately, but my period hasn't come yet.
Is there a possibility of pregnancy? When should I start taking the next box? It has been three days since I stopped taking the pills.

Niming, 10~19 year old female. Ask Date: 2020/03/29

Dr. Wu Xianghui reply Obstetrics and Gynecology


Please visit the outpatient clinic for evaluation and examination by a specialist in obstetrics and gynecology.

Reply Date: 2020/03/29

More Info


Accidentally overdosing on birth control pills can be concerning, but it's important to understand the implications and what steps to take next. In your case, you mentioned that you had taken 26 pills instead of the prescribed 21, and now you're worried about the possibility of pregnancy since your period hasn't arrived yet.

First, let's address the concern about pregnancy. Birth control pills work primarily by preventing ovulation, thickening cervical mucus, and thinning the uterine lining. When taken correctly, they are highly effective at preventing pregnancy. However, taking an excessive number of pills in a short period can lead to hormonal imbalances, which may disrupt your menstrual cycle. The absence of your period could be a result of the hormonal fluctuations caused by the overdose rather than an indication of pregnancy.

If you had unprotected intercourse during the time you were taking the pills, there is a slight chance of pregnancy, especially if you were not taking the pills consistently prior to the overdose. However, since you were on the pill for a while before the incident, the risk remains low. If you are concerned about the possibility of pregnancy, consider taking a home pregnancy test about a week after your missed period for a more definitive answer.

Regarding what to do next, here are some recommendations:
1. Stop Taking the Pills: Since you have already stopped taking the pills after the overdose, it’s advisable to give your body some time to recover. Continuing to take them after an overdose could exacerbate hormonal imbalances.

2. Monitor Your Cycle: Keep track of your menstrual cycle. It may take some time for your period to return to normal after the hormonal disruption caused by the overdose. It’s not uncommon for your cycle to be irregular for a month or two following such an incident.

3. Consult a Healthcare Provider: It’s crucial to speak with a healthcare professional about your situation. They can provide personalized advice based on your health history and current circumstances. They may recommend a pregnancy test or other evaluations to ensure everything is okay.

4. Restarting Birth Control: If you decide to continue using birth control pills after this incident, it’s generally recommended to start a new pack after your next period begins. This helps ensure that your body is back in sync and that the pills can effectively prevent pregnancy. If your period does not arrive within a reasonable timeframe (usually a week or two), consult your healthcare provider before starting a new pack.

5. Consider Alternative Contraceptive Methods: If you find that hormonal birth control is causing you anxiety or complications, you might want to explore other contraceptive options. Barrier methods (like condoms), intrauterine devices (IUDs), or implants are effective alternatives that might suit your lifestyle better.

6. Addressing Anxiety: If you find yourself feeling anxious about potential pregnancy or the effects of the overdose, consider speaking to a mental health professional. Anxiety surrounding reproductive health is common, and a therapist can help you develop coping strategies.

In summary, while the risk of pregnancy after an overdose of birth control pills is low, it’s essential to monitor your body’s response and consult with a healthcare provider for personalized guidance. They can help you navigate your options and ensure that you are using the most effective and suitable method of contraception for your needs.

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