Changes in Menstrual Flow After Taking Birth Control Pills

After taking menstrual regulation medication, the volume of menstrual flow has decreased, Lutein?

Before taking menstrual regulation medication, my menstrual cycle was 28 days and regular each month, with no abdominal pain.
Due to my low weight (under 40 kg), I still wanted to take medication to enhance contraceptive effectiveness, so my doctor prescribed Loette (21+7).
I have been taking Loette for the third month now.
In the first two months, my period arrived in the fourth week, but it was different this time: my menstrual bleeding lasted for 5 days, and I only needed to use panty liners.
However, in the third month, which is currently ongoing, my period started on the fourth day of the third week, and the flow is very light.
I would like to inquire about the following:
1.
What could be the reasons for the consistently reduced menstrual flow over the past three months?
2.
Is my body possibly less suited for contraceptive or menstrual regulation medications?
3.
Has my body been affected, and what kind of tests can I undergo? I previously had a Pap smear (when I first received the contraceptive pill), and everything was normal.
Should I have another one?
4.
If I want to make an appointment with my original gynecologist, should I wait until this period ends, or is an internal examination not necessary, and can I schedule an appointment now?
5.
Should I continue taking the medication for the upcoming fourth week of my period? Thank you, doctor.

Shuan, 20~29 year old female. Ask Date: 2021/09/12

Dr. Cao Guotao reply Obstetrics and Gynecology

Hello, it's still considered normal.
If the amount is very small, you can switch to a different brand of birth control pill.
Wishing you good health.

Reply Date: 2021/09/12

More Info

When considering changes in menstrual flow after starting birth control pills, it's important to understand how hormonal contraceptives like Loestrin (which you mentioned) can affect your menstrual cycle. Birth control pills work by regulating hormones in your body, which can lead to various changes in your menstrual flow and cycle regularity.

1. Reduced Menstrual Flow: It's not uncommon for women to experience lighter periods after starting birth control pills. The hormones in the pills can thin the uterine lining, which may result in less menstrual bleeding. If you've noticed that your flow has become lighter over the past three months, this could be a normal response to the medication. Many women report lighter periods or even missed periods while on hormonal contraceptives.

2. Suitability for Birth Control Pills: While many women tolerate birth control pills well, some may experience side effects or changes that suggest they are not the best fit for them. If you are experiencing significant changes in your menstrual cycle, such as a drastic reduction in flow or other symptoms, it may be worth discussing with your healthcare provider. They can help determine if the current medication is suitable for you or if an alternative method of contraception might be better.

3. Health Checks: Since you have already had a Pap smear that returned normal results, it may not be necessary to repeat this test immediately unless your doctor recommends it based on your symptoms or medical history. However, if you have concerns about your menstrual changes or any other symptoms, it would be prudent to schedule a visit with your gynecologist. They may suggest additional tests, such as hormone level assessments or an ultrasound, to rule out any underlying issues.

4. Scheduling an Appointment: You can schedule an appointment with your gynecologist at any time, even if you are currently on your period. Many gynecologists can perform examinations and assessments regardless of your menstrual cycle phase. However, if you prefer to wait until after your period for comfort reasons, that is also perfectly acceptable.

5. Continuing the Birth Control Regimen: As for whether to continue taking the pills during the fourth week, it is generally recommended to complete the pack as prescribed. Stopping the pills mid-cycle can lead to irregular bleeding and may reduce the effectiveness of the contraceptive. If you have concerns about your current regimen, discuss them with your healthcare provider, who can provide personalized advice based on your health history and current situation.

In summary, changes in menstrual flow after starting birth control pills can be normal, but it is essential to monitor your body’s responses and communicate any concerns with your healthcare provider. They can help ensure that your contraceptive method is appropriate for you and address any potential issues that may arise. Regular check-ups and open communication with your doctor are key components of maintaining reproductive health while using hormonal contraceptives.

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