Frequent Urination During Menstruation: Is It Normal? - Obstetrics and Gynecology

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Why do I keep needing to go to the bathroom?


Hello, doctor.
My period started on the 22nd, but I have been feeling a constant urge to urinate.
Could this be due to the uterus pressing on the bladder? However, I am also urinating a lot, and my menstrual flow is quite heavy.
Is this normal? Thank you.

huanzhe, 40~49 year old female. Ask Date: 2015/11/24

Dr. Lin Wenbin reply Obstetrics and Gynecology


Please go to the hospital for an examination.

Reply Date: 2015/11/24

More Info


Frequent urination during menstruation can indeed be a common experience for many women, and it can be attributed to several physiological changes that occur in the body during this time.
Firstly, during menstruation, the body undergoes hormonal fluctuations, particularly with estrogen and progesterone. These hormones can affect the bladder and urinary tract. Estrogen, for instance, can increase blood flow to the pelvic area, which may lead to increased sensitivity in the bladder. Additionally, the hormonal changes can lead to fluid retention prior to menstruation, and once menstruation begins, the body may start to expel this excess fluid, resulting in more frequent urination.

Moreover, the uterus expands and contracts during menstruation, which can indeed exert pressure on the bladder. This pressure can lead to a sensation of needing to urinate more frequently, even if the actual volume of urine produced is not significantly increased. In cases where menstrual flow is heavy, the increased pressure from the uterus can be more pronounced, leading to a heightened urge to urinate.

It is also worth noting that some women experience increased anxiety or stress during their menstrual cycle, which can further exacerbate the feeling of needing to urinate. This is often referred to as "nervous bladder," where emotional states can influence urinary frequency.

However, while frequent urination during menstruation can be normal, it is essential to monitor other symptoms that may accompany this condition. If you are experiencing significant discomfort, pain during urination, or any unusual changes in your urinary habits outside of your menstrual cycle, it would be advisable to consult with a healthcare provider. Conditions such as urinary tract infections (UTIs) or other underlying health issues could also present with similar symptoms and may require medical attention.

In summary, frequent urination during menstruation can be a normal physiological response due to hormonal changes and pressure from the uterus. However, if the symptoms are severe or accompanied by other concerning signs, seeking medical advice is recommended to rule out any potential issues. Maintaining a healthy lifestyle, staying hydrated, and managing stress can also help alleviate some of the discomfort associated with menstruation.

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