Early Start on Birth Control Pills: What You Need to Know - Obstetrics and Gynecology

Share to:

Discussing the early use of emergency contraceptive pills?


Hello, Doctor.
I finished my last pack of oral contraceptives (Aik) on February 19.
I was supposed to take a break for seven days, and start the next pack on February 27.
However, I accidentally started the next pack two days early on February 25.
Should I continue taking it, or will this affect its efficacy?

CC, 20~29 year old female. Ask Date: 2023/02/26

Dr. Cao Guotao reply Obstetrics and Gynecology


Hello, please continue taking it; it will not affect the contraceptive effectiveness.
Wishing you good health.

Reply Date: 2023/02/26

More Info


When it comes to starting a new pack of birth control pills, timing and consistency are crucial for maintaining their effectiveness. In your case, you mentioned that you finished your previous pack of birth control pills on February 19 and were supposed to take a break for seven days before starting the next pack on February 27. However, you accidentally started the new pack two days early on February 25.

First, let's clarify how birth control pills work. Most combination oral contraceptives are designed to be taken daily, and they work by preventing ovulation, thickening cervical mucus, and thinning the uterine lining. When taken consistently, they are highly effective at preventing pregnancy.

Starting a new pack of pills earlier than scheduled can potentially affect the hormone levels in your body, but it does not necessarily mean that you will lose contraceptive effectiveness. Since you started the new pack on February 25 instead of February 27, you are essentially overlapping your pill regimen. This means that your body will continue to receive the hormones it needs to prevent ovulation.

Here are some key points to consider:
1. Continue Taking the Pills: Since you have already started the new pack, you should continue taking the pills as directed. Do not skip any doses, and take them at the same time each day to maintain consistent hormone levels.

2. Effectiveness: Starting the new pack early should not significantly impact the effectiveness of the birth control pills, especially since you were already on the pill and your body is accustomed to the hormones. However, it is always a good practice to use a backup method of contraception, such as condoms, for the first seven days of the new pack if you are concerned about potential gaps in protection.

3. Monitoring for Side Effects: Keep an eye out for any unusual side effects or changes in your menstrual cycle. Some women may experience breakthrough bleeding or changes in their period when they adjust their pill schedule. If you notice anything concerning or if you have questions about your specific situation, it’s best to consult your healthcare provider.

4. Future Packs: For future packs, try to adhere to the schedule as closely as possible. If you find that you need to adjust your schedule, it’s advisable to consult with your healthcare provider for personalized guidance.

5. Consult Your Healthcare Provider: If you have any lingering concerns about the early start or if you experience any unusual symptoms, don’t hesitate to reach out to your healthcare provider. They can provide you with tailored advice based on your health history and specific circumstances.

In summary, since you have already started the new pack of birth control pills, continue taking them as prescribed. While starting early may not significantly affect their effectiveness, using a backup method for the first week can provide extra reassurance. Always keep communication open with your healthcare provider for any concerns or questions regarding your birth control regimen.

Similar Q&A

Does Starting Birth Control Pills Early Affect Their Effectiveness?

Thank you for your question. Generally, the 21-day oral contraceptive pill regimen is designed to start on the fifth day of your menstrual cycle. If you start taking the pill one day earlier, on the fourth day, it should not significantly affect its effectiveness. However, it is ...


Dr. Lin Zhaopei reply Obstetrics and Gynecology
Since everyone experiences the first day of menstruation differently, some consider the first day to be when bleeding begins, while others count the first day based on a normal menstrual flow. Therefore, starting a day early is not a significant issue.

[Read More] Does Starting Birth Control Pills Early Affect Their Effectiveness?


Starting Birth Control Pills: Timing and Considerations for New Users

Hello, doctor. I have never used birth control pills before and have not been sexually active. This month, I started taking the birth control pills on the first Sunday after my period began, which was a week later (so I started on the ninth day, unlike the usual first or fifth da...


Dr. Zhong Wenzhen reply Obstetrics and Gynecology
The function of oral contraceptives is to simulate the natural secretion of ovulatory hormones by administering artificial hormones before the onset of the ovulation cycle, thereby suppressing natural ovulation. If oral contraceptives are started too late (more than 5 days after ...

[Read More] Starting Birth Control Pills: Timing and Considerations for New Users


Can You Take Birth Control Pills Before Your Period Starts?

If you have taken emergency contraception but are taking birth control pills for the first time, and your period is expected in about 17 days, starting the birth control pills now can still provide contraceptive effects. However, it is generally recommended to use an additional f...


Dr. Zhang Kunmin reply Obstetrics and Gynecology
Hello, the first time you take birth control pills, it is recommended to start on the first day of your menstrual cycle. Given your situation, it is advisable to use other methods of contraception for now. Thank you! Wishing you peace and health, Dr. Chang.

[Read More] Can You Take Birth Control Pills Before Your Period Starts?


Starting Birth Control Pills Before Your Period: What to Know

Hello, doctor. Normally, my period is due on January 23, and I will be meeting my boyfriend that day. Yesterday, I bought Yaz at the pharmacy; this is my first time taking birth control pills. The pharmacist advised me to start taking them immediately to delay my period. I took t...


Dr. Cao Guotao reply Obstetrics and Gynecology
Hello, you should start taking the birth control pill on the fifth day of your menstrual period. It doesn't have to be taken at the exact same time each day; a general timeframe is sufficient. As long as you take it consistently, it will be effective for contraception. It se...

[Read More] Starting Birth Control Pills Before Your Period: What to Know


Related FAQ

Birth Control Pills

(Obstetrics and Gynecology)

Oral Contraceptive Pill

(Obstetrics and Gynecology)

Emergency Contraceptive Pill

(Obstetrics and Gynecology)

Abortion Pill

(Obstetrics and Gynecology)

Early Pregnancy

(Obstetrics and Gynecology)

Medication To Delay Menstruation

(Obstetrics and Gynecology)

Ovulation Medication

(Obstetrics and Gynecology)

First Menstruation

(Obstetrics and Gynecology)

Menstrual Regulation Medication

(Obstetrics and Gynecology)

Oral Contraceptives

(Pharmacology)