Irregular Periods After Starting Birth Control for PCOS - Obstetrics and Gynecology

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Irregular menstrual periods after taking oral contraceptives due to polycystic ovary syndrome (PCOS)?


Hello, doctor.
I went to see a physician and was diagnosed with polycystic ovary syndrome and endometriosis.
The doctor prescribed me oral contraceptives (Diane).
However, after finishing the first month, I started having brown discharge 11 days later, which lasted for 6 days before my menstrual period began.
On the second day of my period, I took the second pack as instructed.
Currently, my period has lasted for 11 days and is still ongoing, presenting as thick and light in volume.
Is this a normal condition? Should I return for an earlier follow-up? My doctor has scheduled my next appointment after I finish three packs.

Miss Lin, 20~29 year old female. Ask Date: 2020/02/15

Dr. Cao Guotao reply Obstetrics and Gynecology


Hello, it's been a while.
I recommend returning to your original obstetrics and gynecology specialist.
Wishing you good health.

Reply Date: 2020/02/15

More Info


When it comes to managing irregular periods after starting birth control, especially in the context of Polycystic Ovary Syndrome (PCOS) and endometriosis, it’s essential to understand how hormonal contraceptives work and what changes to expect in your menstrual cycle.
Firstly, it’s important to note that hormonal birth control, such as the pill you are taking (Diane), is often prescribed to help regulate menstrual cycles, reduce symptoms of PCOS, and manage endometriosis. These medications work by providing a steady level of hormones that can help to stabilize the menstrual cycle. However, it is not uncommon for individuals to experience irregular bleeding or spotting, especially during the initial months of starting a new contraceptive regimen.

In your case, experiencing brown discharge for several days before your period and then having a prolonged menstrual-like bleeding phase can be concerning, but it is not unusual. The brown discharge you observed is typically old blood, which can occur as the body adjusts to the hormonal changes induced by the birth control pill. The fact that you are on your second pack of pills and still experiencing bleeding may indicate that your body is still adjusting to the new hormone levels.

Here are some points to consider:
1. Adjustment Period: It can take a few months for your body to adjust to hormonal birth control. During this time, irregular bleeding or spotting can occur. This is particularly true for individuals with PCOS, as their hormonal balance may be more sensitive to changes.

2. Bleeding Patterns: While some women may experience lighter, more regular periods after starting the pill, others may have prolonged bleeding or spotting. If the bleeding is light and not accompanied by severe pain or other concerning symptoms, it may be a normal adjustment.

3. When to Seek Help: If the bleeding becomes heavy (soaking through a pad or tampon every hour), is accompanied by severe pain, or lasts significantly longer than expected, it is advisable to contact your healthcare provider sooner than your scheduled appointment. Additionally, if you experience any other unusual symptoms, such as dizziness or fainting, you should seek medical attention.

4. Follow-Up: Since your doctor has scheduled a follow-up appointment after three packs of pills, it is reasonable to wait until then unless you have significant concerns. However, keeping a record of your bleeding patterns and any other symptoms can be helpful for your doctor during your next visit.

5. Lifestyle and Management: Alongside medication, managing PCOS often involves lifestyle changes such as diet and exercise. These can help improve symptoms and regulate your menstrual cycle. Discussing these aspects with your healthcare provider can provide additional support.

In summary, while it is not uncommon to experience irregular bleeding when starting birth control, it is essential to monitor your symptoms closely. If you have any concerns about your bleeding patterns or experience any alarming symptoms, do not hesitate to reach out to your healthcare provider for guidance. Your health and peace of mind are paramount, and your doctor can provide the best advice tailored to your specific situation.

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