Lower Abdominal Discomfort During Menstruation - Urology

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Bloating in the lower abdomen?


Hello Doctor, since last summer until now, I have been experiencing discomfort in my bladder (lower abdomen) during the first two days of my menstrual period.
I'm not sure if it's bladder distension or lower abdominal bloating.
The discomfort is located very low, near the bladder.
When it feels bloated, I have the urge to urinate, but it's not an urgent need; I can wait for a long time before going.
However, the bloating in that area is quite uncomfortable.
Last night, I was so uncomfortable that I couldn't sleep, so I used a heating pad on my lower abdomen, which helped alleviate the discomfort.
Is it normal to experience this kind of situation during menstruation? I don't feel bloated before or after my period; only when my bladder is around 250cc full do I have a slight sensation.
Also, is it normal to feel the urge to urinate when my bladder is at 250cc? Thank you, Doctor!

Yu, 10~19 year old female. Ask Date: 2018/02/12

Dr. Du Shixi reply Urology


Hello: It is normal to feel the urge to urinate at around 250cc, but this varies from person to person due to factors such as circumstances, weather, and individual health conditions.
As long as the urine is clear and there is no pain during urination, everything is fine.
Wishing you good health.

Reply Date: 2018/02/12

More Info


Experiencing discomfort in the lower abdomen during menstruation is a common concern for many individuals. The symptoms you describe, such as a feeling of fullness or pressure in the bladder area, particularly during the first couple of days of your menstrual cycle, can be attributed to several physiological changes that occur in the body during this time.

Firstly, it is essential to understand that the menstrual cycle involves significant hormonal fluctuations, particularly in estrogen and progesterone. These hormones can affect various organs, including the uterus and bladder. During menstruation, the uterus contracts to help shed its lining, which can lead to cramping and discomfort. These contractions can also exert pressure on the bladder, leading to the sensation of fullness or discomfort in the lower abdomen.

The sensation of needing to urinate, even when the bladder is not full, can also be linked to the proximity of the bladder to the uterus. As the uterus expands and contracts during menstruation, it can irritate the bladder, causing increased urgency or discomfort. This is often referred to as "referred pain," where discomfort in one area of the body is felt in another.

Using a heating pad, as you mentioned, is a common and effective method to alleviate menstrual cramps and discomfort. Heat can help relax the muscles of the uterus and improve blood flow, which can reduce pain and discomfort in the lower abdomen.

Regarding your question about the sensation of needing to urinate when your bladder contains approximately 250cc of urine, this is generally considered normal. The bladder's capacity varies from person to person, but most individuals begin to feel the urge to urinate when the bladder is about one-quarter to one-third full. This sensation can be influenced by various factors, including hydration levels, bladder sensitivity, and individual anatomy.

If your symptoms are persistent or worsening, or if you experience additional symptoms such as severe pain, changes in your menstrual cycle, or urinary issues, it would be advisable to consult with a healthcare provider. They may recommend further evaluation, such as a pelvic exam or imaging studies, to rule out any underlying conditions such as endometriosis, fibroids, or urinary tract infections.

In summary, experiencing discomfort in the lower abdomen and bladder area during menstruation can be a normal part of the menstrual cycle due to hormonal changes and the anatomical relationship between the uterus and bladder. Utilizing heat therapy can provide relief, and feeling the urge to urinate at a bladder volume of 250cc is typically within the normal range. However, if you have concerns about your symptoms, seeking medical advice is always a prudent step.

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