Impact of Extended Birth Control Pill Use on Menstrual Cycle

Contraceptive pill issues?

Hello, Dr.
Tsao! I have been consistently taking birth control pills (and also have regular sexual activity), usually starting on the fifth day of my menstrual cycle.
My period typically starts two days after I stop taking the pills (though once it started three days later).
Since I want to adjust my schedule for a trip (from August 16 to August 18), I am considering delaying my period.
I finished my last pack of birth control pills on July 11, and according to my normal cycle (assuming no discrepancies), my period should end around August 16 (sometimes the flow is very light by the third day, so it doesn't always last a full seven days).
I consulted with a doctor who suggested that for precaution, after finishing the pills on July 11, I should take an additional five pills, which would mean finishing that pack on July 16.
Then, when I finish the next pack on August 12, I should again take an additional five pills, finishing on August 17, which would effectively delay my period.
I would like to ask if taking an extra five birth control pills for two consecutive months will affect my menstrual cycle, or if it would be better not to take the extra pills and just let my period end around August 16?

Fluffy, 10~19 year old female. Ask Date: 2020/07/12

Dr. Cao Guotao reply Obstetrics and Gynecology

Hello, a delayed menstrual period can occur, but it does not necessarily indicate any contraceptive failure.
Wishing you good health.

Reply Date: 2020/07/12

More Info

The use of birth control pills, particularly in a continuous or extended manner, can have various effects on the menstrual cycle. When a woman takes birth control pills, they work primarily by regulating hormones that control the menstrual cycle. The hormones in these pills prevent ovulation, thicken cervical mucus, and thin the lining of the uterus, which collectively help to prevent pregnancy.

In your case, you are considering extending the use of your birth control pills to delay your menstrual cycle for a planned trip. This is a common practice among women who wish to avoid menstruation during specific events or vacations. However, it is essential to understand the potential implications of this decision.

1. Impact on Menstrual Cycle: Taking additional pills to delay your period can lead to changes in your menstrual cycle. While many women can safely extend their pill regimen without significant issues, it may cause some irregularities. Some women may experience breakthrough bleeding or spotting when they take pills continuously. Others may find that their next period is lighter or shorter than usual. In some cases, the body may take a cycle or two to readjust after stopping the extended use of the pills.

2. Hormonal Balance: The hormones in birth control pills can affect your body’s natural hormonal balance. By taking extra pills, you are essentially altering this balance temporarily. While this is generally safe for most women, it is crucial to follow your healthcare provider's recommendations and monitor how your body responds.

3. Consultation with Healthcare Provider: It is always advisable to discuss any changes to your birth control regimen with your healthcare provider. They can provide personalized advice based on your medical history and current health status. If your doctor suggested taking additional pills, they likely considered your specific situation and determined that it would be safe for you.

4. Potential Side Effects: Extended use of birth control pills can lead to side effects such as nausea, breast tenderness, mood changes, and headaches. If you experience any severe side effects or unusual symptoms, it is essential to contact your healthcare provider.

5. Future Cycles: After extending your pill use, your menstrual cycle may take some time to return to its regular pattern. This is normal, and most women will find that their cycles stabilize after a few months. However, if you notice significant changes or irregularities in your cycle after stopping the extended use, it is advisable to seek medical advice.

In summary, while taking additional birth control pills to delay your period is a common practice and can be done safely for many women, it is essential to be aware of the potential effects on your menstrual cycle and overall hormonal balance. Always consult with your healthcare provider before making changes to your medication regimen to ensure that it aligns with your health needs and lifestyle.

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