# Frequent Urination at 31 Weeks Pregnant

Source: https://www.pregnancypowerhour.com/pregnancy/symptoms/frequent-urination-week-31
Last updated: 2026-07-01

> At 31 weeks pregnant, increased blood volume and your baby's position can lead to more frequent urination, especially overnight, as your body prepares for birth.

Around 31 weeks pregnant, it's very common to notice a significant increase in how often you need to use the restroom, a shift largely due to your baby's growing presence and position. This symptom, often referred to as "peeing constantly," is a normal and expected part of the third trimester.

While frequent urination tends to peak in both the first and third trimesters, the reasons behind it evolve. Earlier in pregnancy, hormonal changes and increased blood volume play a larger role. Now, at 31 weeks, your body is managing a substantial increase in blood volume, which means your kidneys are working harder to process fluids. Beyond the increased blood volume, the physical reality of your growing baby is a primary factor. Your uterus is expanding, and your baby is getting larger, which means there's more direct pressure on your bladder. This compression can make you feel the urge to urinate more frequently, even if your bladder isn't completely full. Many people find this sensation is particularly noticeable at night, disrupting sleep. Understanding these physiological changes can bring a sense of calm, knowing that what you're experiencing is a typical part of this stage of pregnancy.

It's important to remember that while this symptom can be inconvenient, staying well-hydrated during the day remains essential for your overall well-being. Your body needs adequate fluids to support both you and your baby. Just as we might explore options for managing other pregnancy experiences, like understanding [Food Cravings at 15 Weeks Pregnant](/pregnancy/symptoms/cravings-week-15) or navigating [Food Cravings at 16 Weeks Pregnant](/pregnancy/symptoms/cravings-week-16), finding a balance with hydration is key. One practical approach many find helpful is to reduce fluid intake in the couple of hours leading up to bedtime. This doesn't mean restricting fluids entirely, but rather shifting your hydration focus to earlier in the day to potentially lessen those nighttime trips to the bathroom.

This period of pregnancy is all about making informed decisions that support your comfort and health. While the focus here is on frequent urination, remember that your body is undergoing many changes. Just as learning about [Food Cravings at 17 Weeks Pregnant](/pregnancy/symptoms/cravings-week-17) can help you feel more in control of your nutrition, understanding the mechanics behind frequent urination can empower you to manage it with greater ease. Your provider is your best resource for your specific situation, and open communication about your symptoms ensures you receive the personalized support you need. Grab the free first-trimester guide — link in bio.