Menstrual Changes While Taking Oral Contraceptives - Obstetrics and Gynecology

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The menstrual flow while taking oral contraceptives?


Hello, doctor.
I have been taking oral contraceptives for over three months now.
It is generally said that the menstrual flow decreases after starting oral contraceptives.
However, my menstrual flow over the past few months has not been less than before; it is about the same or even slightly more.
Is this normal? I am taking Yaz.
Thank you for your patient response.

Niming, 20~29 year old female. Ask Date: 2017/12/29

Dr. Huang Jianzhong reply Obstetrics and Gynecology


It is normal.

Reply Date: 2017/12/29

More Info


When it comes to understanding menstrual changes while taking oral contraceptives, it's important to recognize that individual responses to these medications can vary significantly. Oral contraceptives, like the one you mentioned (Yaz, or "悅己" in Chinese), are designed to regulate menstrual cycles and can influence the amount and duration of menstrual bleeding. However, the effects can differ from person to person.

1. Variability in Menstrual Flow: While many women experience a reduction in menstrual flow after starting oral contraceptives, this is not a universal outcome. Some women may find that their menstrual flow remains the same or even increases. This can be due to several factors, including the specific formulation of the contraceptive, individual hormonal responses, and other underlying health conditions. It's also worth noting that the first few months of taking oral contraceptives can be a period of adjustment, and menstrual patterns may change as your body acclimates to the hormones.

2. Hormonal Composition: The specific hormones in the contraceptive pill can affect your menstrual cycle. Yaz, for example, contains drospirenone and ethinyl estradiol, which can influence the lining of the uterus and the hormonal feedback mechanisms that regulate menstruation. If your body is responding to these hormones in a way that maintains or increases your menstrual flow, it may be a normal reaction for you.

3. Other Factors: Several other factors can influence menstrual flow while on oral contraceptives. These include stress, weight changes, diet, exercise, and other medications. If you've experienced significant changes in any of these areas, they could be contributing to your menstrual patterns.

4. When to Seek Medical Advice: If your menstrual flow is significantly heavier than what you consider normal for yourself, or if you experience other concerning symptoms such as severe pain, irregular bleeding, or any signs of hormonal imbalance (like mood swings, weight gain, or acne), it would be wise to consult with your healthcare provider. They may want to evaluate your current contraceptive method and consider alternatives if necessary.

5. Monitoring Your Cycle: Keeping a record of your menstrual cycle, including flow, duration, and any accompanying symptoms, can be helpful for discussions with your healthcare provider. This information can provide insights into your individual response to the contraceptive and assist in determining whether any adjustments are needed.

In summary, while many women do experience a decrease in menstrual flow when taking oral contraceptives, it is not uncommon for some to have similar or increased flow. If you have concerns about your menstrual changes while on Yaz, it is advisable to discuss these with your healthcare provider, who can offer personalized guidance based on your health history and current situation. Remember, every woman's body reacts differently to hormonal contraceptives, and finding the right method for you may take some time and adjustment.

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