When to Start Your Next Birth Control Pack

Questions about preemptive contraception use?

I would like to ask about my current use of the 21-day oral contraceptive pill.
The doctor instructed me to start taking it on the third day of my period, and after finishing the pack, my period usually comes about 2-3 days later.
I would like to know if I should start the next pack 7 days after finishing this one (regardless of when my period comes) or wait until the next period and start on the third day again? Thank you.

Lala, 20~29 year old female. Ask Date: 2016/02/01

Dr. Cao Guotao reply Obstetrics and Gynecology

Hello, the usual timing for taking oral contraceptives is to start on the fifth day of your menstrual period.
If your cycle is around 28 days, this is a common practice.
If you start on the third day of your period, which indicates a shorter cycle, that should also be acceptable.
Wishing you good health!

Reply Date: 2016/02/01

More Info

When it comes to starting your next pack of birth control pills, it's essential to follow the guidelines provided by your healthcare provider and understand the mechanics of how these medications work. Based on your question, you are currently using a 21-day birth control pill regimen, which typically involves taking one pill daily for 21 days, followed by a 7-day break during which you will usually have your menstrual period.

To clarify your specific question: after finishing your current pack of birth control pills, you should wait 7 days before starting the next pack, regardless of whether your period has started or not. This means that you do not need to wait for your next menstrual cycle to begin before starting the new pack. You can start the new pack on the 8th day after finishing the last pill of your current pack.
This approach is crucial because the effectiveness of the birth control pills relies on consistent daily intake. By starting the new pack on schedule, you maintain the hormone levels necessary to prevent ovulation and ensure continued contraceptive protection. If you were to wait for your next period to start the new pack, you could potentially leave yourself unprotected during that time.

It's also important to note that if you experience any irregularities in your menstrual cycle, such as a delayed period after completing a pack, you should consult with your healthcare provider. They may want to rule out any potential issues, such as pregnancy, especially if you have had unprotected intercourse or missed any pills during the previous cycle.

In summary, after completing your 21-day pack, you should:
1. Wait 7 days (during which you may have your period).

2. Start your next pack on the 8th day, regardless of whether your period has ended or not.

This method ensures that you remain protected against pregnancy. If you have any further questions or concerns about your birth control method, it's always best to discuss them with your healthcare provider, who can provide personalized advice based on your health history and needs.

Additionally, if you are using birth control pills for reasons other than contraception, such as managing menstrual pain or acne, it's essential to continue taking them as prescribed to achieve the desired therapeutic effects. If you have any side effects or concerns about the medication, do not hesitate to reach out to your healthcare provider for guidance. They can help you navigate any issues and adjust your treatment plan if necessary.

Similar Q&A

Understanding When to Start Your Next Birth Control Pill Pack

Hello doctor, I started taking my first pack of 21-day birth control pills on March 7 (the fifth day of my period). I finished the pack on March 27 and got my period on March 30. Should I start my next pack on April 3 (the fifth day of my period) or on April 4 (after a 21-day cou...

Dr. Liu Fuping reply Obstetrics and Gynecology
Birth control pills have both benefits and drawbacks. It is recommended to consult a gynecologist for detailed information about the medication and usage instructions, and to follow the directions on the packaging. Generally, for a 21-pill regimen, the pills should be taken daily...

When to Start the Next Pack of Birth Control After a Delay?

You took your first dose of the medication on June 7th and were supposed to start the next pack on July 5th. However, it is now July 10th and you have not taken it yet. When should you start the next pack?

Dr. Huang Jianzhong reply Obstetrics and Gynecology
You should start taking the next box of Yejih on July 12th.

Starting a New Birth Control Pack: Key Considerations and Timing

After finishing the last pill of your current birth control pack on December 30, January 6 is the seventh day without taking any pills. Should I start a new pack of birth control today, or wait until January 7? Does it matter that the new brand is different from the one I was pre...

Dr. Huang Jianzhong reply Obstetrics and Gynecology
You should take the new pack of birth control pills today, as it is the seventh day without taking the pills. It does not matter if the brand is different; it will not affect the effectiveness of the contraception. Please note that you started taking the birth control pills in No...

Understanding Birth Control Pills: When to Start Your Next Pack

Doctor, I started taking my first pack of birth control pills (Mizolut) on September 14, so I finished the last pill on October 4. When should I start taking my second pack? Also, I haven't gotten my period this month; could it be delayed because of the birth control pills? ...

Dr. Zhuang Zhijian reply Obstetrics and Gynecology
Hello, Miss: Thank you for your inquiry. Here are my responses and suggestions: 1. After stopping the medication, you should start taking the next cycle of pills on the eighth day (a total of seven days without medication). 2. If you have been taking the medication on schedule,...