Irregular Periods: When to Start Birth Control Pills - Obstetrics and Gynecology

Share to:

Menstrual issues?


Hello, doctor: A few days ago, I visited the hospital because my menstrual cycle was irregular.
You prescribed me birth control pills to regulate my cycle, and I also received a menstrual induction injection that day.
My period did come, but it was brown in color and very light.
Does this count as my period? My period started on the 11th; should I begin taking the pills from the 15th?

Lisa, 20~29 year old female. Ask Date: 2005/01/13

Dr. Huang Jianxun reply Obstetrics and Gynecology


Yes, please start using the contraceptive pill from the 15th.
The effects on regulating your menstrual cycle will be evident by your next period.

Reply Date: 2005/01/13

More Info


When it comes to understanding irregular periods and the use of birth control pills for regulating menstrual cycles, it's essential to consider several factors. Irregular periods can be caused by a variety of reasons, including hormonal imbalances, stress, significant weight changes, or underlying health conditions such as polycystic ovary syndrome (PCOS). Birth control pills are often prescribed to help regulate the menstrual cycle by providing consistent hormone levels.

In your case, since you have received a prescription for birth control pills to regulate your cycle, it’s important to follow your healthcare provider's instructions closely. The fact that you experienced a menstrual-like bleeding after receiving a hormonal injection and that the bleeding was brown and light in volume can be indicative of several things. Brown discharge often signifies older blood that has taken longer to exit the uterus, which can occur at the beginning or end of a menstrual period. However, it can also be a sign of hormonal changes or irregular shedding of the uterine lining.

Regarding when to start taking the birth control pills, the general recommendation is to begin taking them at the start of your next menstrual cycle. Since your period started on the 11th, you would typically start taking the pills on the first Sunday after your period begins, or as directed by your healthcare provider. If your healthcare provider has advised you to start on the 15th, it’s crucial to adhere to that guidance.
It’s also worth noting that when starting birth control pills, it may take a few cycles for your body to adjust, and you might experience some irregular bleeding or spotting initially. This is common and usually resolves as your body acclimates to the hormones in the pills. If you continue to experience irregular bleeding or if you have any concerns about the nature of your bleeding, it’s advisable to follow up with your healthcare provider.

In addition to regulating your menstrual cycle, birth control pills can also provide other benefits, such as reducing menstrual cramps, managing acne, and decreasing the risk of certain reproductive health issues. However, it’s important to discuss any potential side effects or risks associated with birth control pills with your healthcare provider, especially if you have any pre-existing health conditions or concerns.

In summary, starting birth control pills can be an effective way to manage irregular periods, but it’s essential to follow your healthcare provider's instructions regarding when to start. Monitor your symptoms, and don’t hesitate to reach out to your healthcare provider if you have any questions or concerns about your menstrual cycle or the use of birth control pills. Regular follow-ups can help ensure that you are on the right track and that your reproductive health is being effectively managed.

Similar Q&A

Understanding Birth Control Pills and Irregular Periods: What You Need to Know

In the case of irregular menstruation and having not had a period for six months, if you start taking oral contraceptive pills, you should use additional contraceptive methods for the first seven days after starting the pills before engaging in unprotected intercourse. It is advi...


Dr. Huang Yuande reply Obstetrics and Gynecology
Emergency contraceptive pills are effective only when taken regularly starting a few days before menstruation, rather than just for 7 days. If the menstrual cycle is irregular, it may require even more time to achieve contraceptive effectiveness.

[Read More] Understanding Birth Control Pills and Irregular Periods: What You Need to Know


Understanding Irregular Periods After Starting Birth Control Pills

I started taking the contraceptive pill on the first day of my period, February 26. My period came again from March 13 to March 17, but I continued taking the pills until March 18, totaling 21 pills. From February 26 to March 13, there were only two weeks between periods, which s...


Dr. Huang Jianzhong reply Obstetrics and Gynecology
I started taking the contraceptive pill on the first day of my period, February 26. My period came again from March 13 to March 17, but I continued taking the pills until March 18, completing a total of 21 pills. From February 26 to March 13, there were only two weeks between per...

[Read More] Understanding Irregular Periods After Starting Birth Control Pills


Understanding Missed Birth Control Pills and Irregular Bleeding

Please consult your doctor. I have been taking the birth control pill for 21 days. My menstrual cycle started on October 31, and I began taking the first pill on the fifth day, November 3. I did not take any pills after November 17. I experienced bleeding on November 21. When sho...


Dr. Cao Guotao reply Obstetrics and Gynecology
Hello, you can start taking it from November 26th and observe if there are any early occurrences next month. If so, it is recommended to switch to a different brand of the product. Wishing you good health.

[Read More] Understanding Missed Birth Control Pills and Irregular Bleeding


Managing Birth Control After a Break: What You Need to Know

Due to the pandemic, it is inconvenient to go out to buy medication, so I chose to stop taking the medication for a month after having taken it for seven months. I would like to ask how to take the next pack of medication if I experience irregular menstruation during the month I ...


Dr. Cao Guotao reply Obstetrics and Gynecology
Hello, contraceptive pills are generally started on the fifth day of the menstrual cycle. During the time before starting the pills, it is advisable to use condoms for contraception during sexual intercourse. Wishing you good health.

[Read More] Managing Birth Control After a Break: What You Need to Know


Related FAQ

Birth Control Pills

(Obstetrics and Gynecology)

Medication To Induce Menstruation

(Obstetrics and Gynecology)

Medication To Delay Menstruation

(Obstetrics and Gynecology)

Emergency Contraceptive Pill

(Obstetrics and Gynecology)

Menstrual Regulation Medication

(Obstetrics and Gynecology)

Menstrual Period

(Obstetrics and Gynecology)

Menstrual Abnormalities

(Obstetrics and Gynecology)

Safe Period

(Obstetrics and Gynecology)

Delayed Menstruation

(Obstetrics and Gynecology)

Ovulation Medication

(Obstetrics and Gynecology)