Compression Socks During Pregnancy: A Guide for Expecting Mothers in Canada

Swollen ankles, heavy legs, and varicose veins are among the most common discomforts of pregnancy — and they're closely tied to how the body's circulatory system changes during this time. Graduated compression socks and maternity stockings are widely used by pregnant Canadians to manage these changes and support leg comfort throughout pregnancy and the postpartum period.

Why Do Legs Swell During Pregnancy?

During pregnancy, the body produces significantly more blood volume to support the growing baby. The expanding uterus also places pressure on the pelvic veins and inferior vena cava — the large vein that returns blood from the lower body to the heart. This combination slows venous return from the legs, contributing to oedema (swelling), heaviness, fatigue, and in some cases, the development of varicose veins.

These changes tend to become more pronounced as pregnancy progresses, particularly during the second and third trimesters, and often worsen after prolonged standing or sitting.

How Compression Socks Help During Pregnancy

Graduated compression socks apply gentle, consistent pressure at the ankle that decreases up the leg — helping push blood upward despite increased venous pressure. Benefits reported by pregnant wearers commonly include:

• Reduced ankle and lower-leg swelling
• Decreased aching and heaviness in the legs
• Support for mild varicose veins that develop during pregnancy
• More comfortable standing and walking during work or daily activities

What Compression Level Is Appropriate During Pregnancy?

For most healthy pregnancies, a 15-20 mmHg or 20-30 mmHg level is appropriate. The 15-20 mmHg range offers light, comfortable support suitable for everyday wear, while 20-30 mmHg is often recommended for those with more pronounced swelling or a history of varicose veins.

As with any compression decision during pregnancy, speaking with your midwife or obstetrician is a good first step — particularly if you have any circulatory or blood pressure concerns.

Browse maternity compression socks at Factory Direct Medical, including options designed to accommodate the changing body throughout all stages of pregnancy.

When to Start Wearing Compression Socks During Pregnancy

Many people find it useful to begin wearing compression socks in the first or early second trimester — before significant swelling develops — as a preventive measure. Others begin when symptoms like swelling or heaviness first appear. Maternity compression stockings are generally worn throughout the day and removed before sleep.

Maternity-Specific vs Standard Compression Options

Maternity compression stockings are designed with a reinforced abdominal panel or waistband that accommodates a growing belly without constricting the abdomen. Standard knee-high compression socks (without the abdominal panel) are also widely used during pregnancy, as they provide the calf and ankle support most needed without covering the belly.

For swelling above the knee, maternity thigh-high stockings or full maternity pantyhose styles may be more appropriate — your healthcare provider can advise based on where swelling is most significant.

Postpartum Use

Many new mothers continue wearing compression for several weeks after birth. The period immediately following delivery involves significant circulatory adjustments, and DVT (deep vein thrombosis) risk is elevated in the postpartum period. Compression stockings are sometimes recommended by healthcare providers during this time as part of a recovery protocol.

Frequently Asked Questions