Leg swelling in pregnancy: third trimester

Both ankles and feet may become puffier as pregnancy progresses, especially after standing, walking, or spending the day in heat. The uterus can slow blood return from the legs, while normal pregnancy changes encourage the body to hold more fluid. Swelling that improves after resting with your legs raised is more consistent with ordinary pregnancy-related oedema. Varicose veins can add heaviness or aching. A swollen ankle is a symptom, not a diagnosis; it does not by itself identify a serious condition.

Change position regularly and avoid standing still for long periods. Rest on your side, raise your legs when comfortable, and choose roomy shoes and non-restrictive clothing. Gentle walking and ankle movements can support circulation if your maternity team has said activity is suitable. Drink normally and avoid starting water tablets, herbal products, or a strict low-salt plan without medical advice. Track when the swelling appears and whether both sides are affected.

Contact your maternity unit promptly if swelling comes on suddenly, affects one leg, or comes with calf pain, warmth, redness, or marked tenderness. Seek urgent help for breathlessness, chest pain, coughing blood, faintness, a severe headache, visual changes, pain beneath the ribs, or swelling of the face and hands. These warning patterns need assessment rather than home treatment. If swelling is persistent or troubling, arrange a pregnancy review.

Ask whether your pattern of swelling is expected, whether your blood pressure and urine need checking, and which activity or support stockings are appropriate for you. Mention any new medicines, reduced movement, previous clot, or history of Varicose Veins.