# Swollen Feet in Pregnancy at 40 Weeks Pregnant

Source: https://www.pregnancypowerhour.com/pregnancy/symptoms/swollen-feet-week-40
Last updated: 2026-07-01

> At 40 weeks, managing swollen feet is common due to increased blood volume and uterine pressure, but sudden, severe changes warrant immediate provider contact.

As you reach 40 weeks of pregnancy, it's quite common to experience peak levels of swelling in your feet, often referred to as pregnancy foot edema. This phenomenon affects roughly 80% of pregnancies, and understanding its roots can bring a sense of calm and clarity as you approach your estimated due date. The primary physiological mechanisms behind this late-pregnancy swelling are multifaceted yet understandable. Your body is working diligently to support your growing baby, which includes a substantial increase in blood volume. This expanded blood volume, combined with the increasing pressure your uterus places on the pelvic veins, can make it more challenging for blood to return efficiently from your lower extremities. This reduced venous return is a key contributor to the fluid accumulation you might be noticing in your feet and ankles.

It’s a natural part of this stage of pregnancy, and while it can feel uncomfortable, knowing its commonality can be reassuring. Many parents find themselves navigating these physical changes, much like they might notice other shifts such as the development of [Stretch Marks at 30 Weeks Pregnant](/pregnancy/symptoms/stretch-marks-week-30) or even later, like [Stretch Marks at 31 Weeks Pregnant](/pregnancy/symptoms/stretch-marks-week-31). These are all reflections of your body's incredible work. The focus now shifts to practical, evidence-based approaches that can offer some ease and support as you await your baby's arrival.

Collaborating with your body by incorporating simple, gentle practices can make a noticeable difference. Elevating your legs above heart level whenever you're resting is a highly effective intervention. This position helps to encourage the fluid to drain away from your feet, providing a sense of relief. One option might also be to consider compression stockings. Research, including findings from Cochrane, suggests that compression stockings can be beneficial in reducing edema and also play a role in mitigating the risk of deep vein thrombosis (DVT), which is a consideration in late pregnancy. These are not about "fixing" anything, but rather supporting your body's natural processes and helping you feel more comfortable.

While some degree of swelling is expected and manageable at 40 weeks, it's crucial to remain attuned to your body and recognize signs that warrant a conversation with your care provider. Sudden, severe swelling, particularly if it extends to your face or hands, and is accompanied by a headache or visual changes, is a signal for urgent evaluation for preeclampsia, as recommended by ACOG. Similarly, if you experience swelling in only one leg, especially if it's accompanied by pain, warmth, or redness, it could indicate a deep vein thrombosis and requires immediate attention. Your provider is your best resource for your specific situation, and they can help you make informed decisions about your well-being as you prepare for birth. Understanding these distinctions empowers you to navigate this final stage of pregnancy with greater clarity and confidence. The goal is to feel as calm and supported as possible, even as your body undergoes these significant changes, much like you might be observing other physical shifts such as [Stretch Marks at 32 Weeks Pregnant](/pregnancy/symptoms/stretch-marks-week-32).