Hormonal Imbalance: Menstrual Changes During Breastfeeding - Obstetrics and Gynecology

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Hormonal imbalance


Last month, my period lasted for 14 days from March 13 to March 26.
I went to see a doctor, and after an ultrasound, I was told it was due to hormonal imbalance.
I have been breastfeeding for two and a half years.
This month, my period was from April 19 to April 23 and only lasted for five days, whereas it usually lasts around seven days.
Today, on April 27, I noticed a small amount of brown discharge after using the restroom.
Could this be due to the hormonal imbalance not resolving, or is there another reason?

Zhou, 30~39 year old female. Ask Date: 2024/04/28

Dr. Cao Guotao reply Obstetrics and Gynecology


Hello, it could be ovulatory bleeding.
Please observe for two to three days, and if there is no improvement, it is recommended to see a gynecologist.
Wishing you good health.

Reply Date: 2024/04/28

More Info


Hormonal imbalance can significantly affect menstrual cycles, especially during breastfeeding. When a woman is breastfeeding, her body produces higher levels of the hormone prolactin, which helps with milk production. Elevated prolactin levels can suppress ovulation, leading to irregular menstrual cycles or even amenorrhea (the absence of menstruation). This is a natural response of the body to prioritize breastfeeding, which is crucial for the infant's nutrition.

In your case, the irregularities in your menstrual cycle—such as the prolonged period of 14 days last month and the shortened duration of 5 days this month—could indeed be attributed to hormonal fluctuations associated with breastfeeding. The presence of brown discharge you noticed could also be related to hormonal changes. Brown discharge often indicates old blood, which may occur at the beginning or end of a menstrual cycle. It can also be a sign of hormonal imbalance, especially if it occurs outside of your regular menstrual period.

Breastfeeding can delay the return of normal menstrual cycles, and many women experience variations in cycle length, flow, and symptoms during this time. It is not uncommon for women who are breastfeeding to have lighter periods or to skip periods altogether. However, if you are experiencing significant changes in your cycle or if the brown discharge continues or is accompanied by other symptoms (such as pain, unusual odor, or heavy bleeding), it is advisable to consult your healthcare provider for further evaluation.

Additionally, hormonal imbalances can be influenced by various factors, including stress, diet, sleep patterns, and overall health. If you have been under stress or have made significant changes to your lifestyle, these could also contribute to the irregularities you are experiencing.
In summary, while hormonal imbalance due to breastfeeding is a likely cause of your menstrual changes, it is essential to monitor your symptoms. If the irregularities persist or worsen, or if you have concerns about your reproductive health, seeking medical advice is crucial. Your healthcare provider may recommend tests to assess your hormone levels and rule out any underlying conditions that could be affecting your menstrual cycle. Regular follow-ups can help ensure that your hormonal balance is restored and that your menstrual cycle returns to a more regular pattern as you transition away from breastfeeding.

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