First Time Taking Birth Control Pills: What You Need to Know - Obstetrics and Gynecology

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First time taking oral contraceptives?


Hello, my first day of menstruation was on January 2nd, and I am trying birth control pills for the first time.
I heard that I should start taking them on the first day of my period, but since that time has passed, will it still be effective if I start taking them now? If I take them today, will I have contraceptive protection by tomorrow? Do I need to finish one pack and then wait a few days before starting the next pack?

Fu Fu, 10~19 year old female. Ask Date: 2017/01/05

Dr. Cao Guotao reply Obstetrics and Gynecology


Hello, you can start taking the contraceptive pill on the fifth day of your menstrual period.
It doesn't have to be taken at the exact same time; a general timeframe is sufficient.
As long as you take it regularly, it will be effective for contraception.
If you forget to take it on a particular day, you can take the missed pill the next day.
Wishing you good health!

Reply Date: 2017/01/05

More Info


When it comes to starting birth control pills for the first time, there are several important factors to consider to ensure effectiveness and safety. Here’s a comprehensive overview based on your questions and general medical knowledge.


Starting Birth Control Pills
1. Timing of Initiation: It is often recommended to start taking combination birth control pills (like "Yaz" or "Yasmin") on the first day of your menstrual period. However, if you miss this window, you can still start the pills at any time during your cycle. If you start the pill after the first day of your period, it is advisable to use an additional form of contraception (like condoms) for the first seven days to ensure you are protected against pregnancy.

2. Effectiveness: If you start taking the pill on the first day of your period, you are protected from pregnancy immediately. If you start at another time, you will need to wait seven days for the pill to become effective. Therefore, if you started taking the pill after your period began, you should use backup contraception for the first week.

3. Taking the Pills: Birth control pills are typically taken once daily, at the same time each day, to maintain consistent hormone levels in your body. It is important to follow the instructions provided with your specific pill pack. Most packs contain 21 active pills followed by 7 inactive (placebo) pills. During the week of inactive pills, you will usually have your period. After finishing a pack, you should start the next pack immediately without a break, unless instructed otherwise by your healthcare provider.

4. Missed Pills: If you miss a pill, the instructions may vary depending on how many pills you missed and when you missed them. Generally, if you miss one pill, take it as soon as you remember. If you miss two or more pills, you may need to follow specific guidelines, which often include using backup contraception for a short period.

5. Consulting with a Healthcare Provider: It’s always a good idea to discuss your plans to start birth control pills with a healthcare provider. They can provide personalized advice based on your health history and any potential contraindications. They can also help you understand the side effects and what to expect when starting the pill.


Additional Considerations
- Side Effects: Common side effects of birth control pills can include nausea, breast tenderness, mood changes, and spotting between periods. Most side effects tend to diminish after a few months of use. If you experience severe side effects or symptoms like chest pain, shortness of breath, or severe headaches, seek medical attention immediately.

- Health Risks: While birth control pills are safe for most women, they may not be suitable for those with certain health conditions, such as a history of blood clots, certain cancers, or uncontrolled hypertension. Discuss your medical history with your healthcare provider to ensure the pill is a safe option for you.

- Long-term Use: Many women use birth control pills for years without issues, but it's important to have regular check-ups with your healthcare provider to monitor your health and discuss any changes in your contraceptive needs.

In summary, while starting birth control pills after the first day of your period is still possible, you will need to use backup contraception for the first week. Always consult with a healthcare provider for tailored advice and to ensure that you are using the method that is best for your health and lifestyle.

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Hello, if taken as directed, it will be effective for contraception. Wishing you good health.

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Hello, taking it on time will provide contraceptive effectiveness. Wishing you good health.

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