Educational content, not medical advice. Clinical review of this page is in progress.
Mild swelling, or edema, in the feet, ankles, and hands is common in pregnancy, especially in the third trimester, as your body retains more fluid to support the growing baby.
Why Pregnancy Causes Swelling
Your body increases blood and fluid volume by up to 50% during pregnancy, and the growing uterus can also put pressure on veins that return blood from the legs, both contributing to fluid buildup.
Relief Strategies
- Elevating your feet when sitting
- Wearing compression socks
- Staying hydrated (counterintuitively, this helps reduce fluid retention)
- Reducing sodium-heavy processed foods
- Taking walking breaks to improve circulation
When Swelling Is a Warning Sign
Sudden or severe swelling — especially in the face and hands, paired with headache, vision changes, or upper abdominal pain — can be a sign of preeclampsia and needs prompt medical attention.
Normal vs. Concerning Swelling
Mild swelling in the feet and ankles is common, especially later in the day and in the third trimester. Sudden swelling of the face or hands, severe headache, vision changes or upper abdominal pain can signal preeclampsia and need urgent medical attention.
More Relief Tips
Elevate your feet, avoid standing for long periods, wear comfortable shoes, and stay hydrated. Gentle walking helps circulation. See the third trimester guide and back pain guide.
When to Call
Contact your provider promptly if swelling is sudden or one-sided, or if it comes with pain in one calf. See NHS: Pregnancy symptoms.
Related Reading
- Pregnancy Back Pain Guide — causes and ways to ease it
- Labor Guide — signs, stages and preparation
- Breastfeeding Preparation — getting ready before the baby arrives
- Newborn Percentile Calculator — track growth after birth
Also see our calculator FAQs, pregnancy FAQs and pregnancy terms glossary.
Frequently Asked Questions
When does swelling in pregnancy usually start?
It usually becomes noticeable in the second half of pregnancy, especially in the third trimester, and tends to be worse late in the day and in warm weather.
Is sudden swelling in the face or hands a concern?
Yes. Sudden swelling of the face or hands, especially with a severe headache, vision changes or upper abdominal pain, can signal preeclampsia. Contact your provider right away.
Is swelling in only one leg normal?
Not usually. Swelling in one leg, particularly with pain, warmth or redness, can be a sign of a blood clot and needs urgent medical care.
Related Resources
- Third Trimester Guide (Weeks 28–40)
- Second Trimester Guide (Weeks 14–27)
- Pregnancy Back Pain Guide: Causes, Relief, and Prevention
- The Complete Pregnancy Fatigue Guide
- Prenatal Screening Tests: The Complete Guide
Sources and Further Reading
This page is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult your OB-GYN or midwife about your own pregnancy.