Breakthrough Bleeding with Birth Control Pills - Obstetrics and Gynecology

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First-time experiencing premenstrual bleeding?


Hello Doctor, this is my first time taking the oral contraceptive (Yueji).
I started taking the first pill on the fifth day of my menstrual period, June 16.
On the 11th day (June 26), I experienced brown discharge and light red bleeding, which lasted for about 4-5 days.
I thought this was just my body adjusting, so I continued taking the pills without stopping.
However, the light bleeding turned into a flow similar to the third day of my period, and since July 1, I have been experiencing blood clots.
On July 6, I completed the 21st pill, and on July 7, which was the first day of my break, I still had bleeding.
I have had sexual intercourse with ejaculation after the 12th day of taking the pills.
Could you please advise me on my situation?

Hong, 20~29 year old female. Ask Date: 2022/07/08

Dr. Zhang Kunmin reply Obstetrics and Gynecology


Hello, the user: During the use of contraceptive pills, if menstruation or breakthrough bleeding occurs, there is no need to stop taking the medication; continue taking it as scheduled.
Once the body adjusts to the contraceptive pills, abnormal bleeding will typically cease.
However, if irregular bleeding persists for more than three months or if there is heavy bleeding, it is advisable to consult a physician for guidance.
Combined oral contraceptives (COCs) must be taken at the same time every day; correct usage can achieve a 99% effectiveness rate in preventing pregnancy.
Thank you! Wishing you peace and health, Dr.
Zhang.

Reply Date: 2022/07/08

More Info


Breakthrough bleeding while on birth control pills, such as the one you are experiencing, is a common occurrence, especially during the first few months of starting a new contraceptive method. This type of bleeding can be concerning, but it is often a normal side effect as your body adjusts to the hormones in the pills.

When you start taking birth control pills, your body undergoes hormonal changes. The hormones in the pills work to prevent ovulation, thicken cervical mucus, and thin the uterine lining. However, during the initial adjustment period, your body may not respond perfectly to these changes, leading to breakthrough bleeding or spotting. This can manifest as light bleeding or spotting that occurs between your regular menstrual periods.

In your case, you began taking the pill on June 16, and by June 26, you noticed some brown discharge and light red bleeding. This is likely your body reacting to the introduction of synthetic hormones. The fact that you continued to experience bleeding, which increased in volume and included blood clots, suggests that your body is still adjusting. It is not uncommon for individuals to experience irregular bleeding patterns for the first three to six months of starting a new birth control method.

Here are some important points to consider regarding your situation:
1. Duration and Volume of Bleeding: If the bleeding is light and not accompanied by severe pain, it is usually not a cause for concern. However, if you experience heavy bleeding (soaking through a pad or tampon every hour for several hours), severe pain, or if the bleeding persists beyond a few months, you should consult your healthcare provider.

2. Sexual Activity and Contraceptive Efficacy: Since you mentioned having unprotected intercourse after the 12th day of taking the pill, it is important to note that birth control pills are most effective when taken consistently and correctly. If you have missed any doses or taken the pills irregularly, this could increase the risk of unintended pregnancy. If you are concerned about the possibility of pregnancy, consider taking a home pregnancy test or consulting your healthcare provider for further evaluation.

3. Consulting Your Healthcare Provider: If the breakthrough bleeding continues or worsens, or if you have any other concerning symptoms (such as severe abdominal pain, dizziness, or signs of infection), it is essential to reach out to your healthcare provider. They may want to evaluate your situation further, possibly adjusting your birth control method or exploring other underlying causes for the bleeding.

4. Adjustment Period: Many individuals find that their bodies adjust to the pill over time, and breakthrough bleeding often decreases or resolves after a few months. If you are still experiencing irregular bleeding after three months, it may be worth discussing alternative contraceptive options with your healthcare provider.

5. Monitoring Your Cycle: Keep track of your bleeding patterns, including the duration, volume, and any associated symptoms. This information can be helpful for your healthcare provider in determining the best course of action.

In summary, while breakthrough bleeding can be alarming, it is often a normal part of starting birth control pills. However, it is crucial to monitor your symptoms and consult your healthcare provider if you have any concerns or if the bleeding does not resolve. Your health and comfort are paramount, and your provider can help ensure that you find the right contraceptive method for your needs.

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