Swelling and water retention in pregnancy: what helps

Why it happens

Blood volume rises by nearly half in pregnancy, hormones make tissues hold more fluid, and the growing uterus presses on the veins returning blood from the legs. The result is fluid pooling in the feet and ankles, particularly by evening and in hot weather.

Around three-quarters of pregnant women get some swelling, mostly from the second half of pregnancy. In Indian summers it arrives earlier and more heavily.

Ordinary swelling is gradual, both-sided, worse at the end of the day and better after a night's rest.

The swelling that is not ordinary

Sudden swelling, swelling of the face and around the eyes, or hands that swell so rings no longer fit — particularly if it appears over a day or two. Combined with severe headache, visual disturbance, upper-right abdominal pain or vomiting, this is the pre-eclampsia pattern and needs a blood-pressure check the same day.

One-sided swelling, especially of a calf, with pain, redness or warmth. That is a possible clot, which is more likely in pregnancy and after delivery, and it is an emergency.

Swelling with breathlessness or chest pain — emergency, immediately.

Swelling with a sudden jump in weight over a few days is fluid rather than food, and it is a reason to be checked.

What actually helps

Feet up whenever sitting, above hip level where possible, and several times a day rather than once.

Move regularly: walking, ankle circles, and not standing still or sitting for long stretches. Movement is what pumps fluid back.

Left-side sleeping, which takes the uterus off the major vein returning blood from the legs.

Drink plenty of water. Cutting fluids to reduce swelling is exactly backwards — dehydration makes the body hold more.

Reasonable salt rather than extreme restriction, comfortable shoes a size up if needed, and compression stockings if your doctor suggests them.

And cool water: a foot soak in the evening genuinely helps in Indian heat.

When to see a doctor

Go to hospital immediately at any stage for: heavy bleeding, severe or constant abdominal pain, a gush or steady trickle of fluid, severe headache with visual changes, sudden swelling of the face and hands, high fever, fainting, or reduced fetal movements after 28 weeks. Call 108 if you cannot travel quickly.

Same-day: sudden swelling of the face or hands, swelling with severe headache or visual changes, one-sided calf swelling with pain or redness, breathlessness or chest pain, a sudden jump in weight, or swelling accompanied by reduced fetal movements.

Also mention at the next visit: swelling that is not settling overnight, swelling early in pregnancy, or numbness and tingling in the hands, which is usually carpal tunnel from the same fluid and is treatable.

This article is general information, not medical advice, and is no substitute for personal medical advice. For any decision about your or your child's health, please consult your doctor.

Frequently asked questions

Q: Should I cut down on water? — No. Reducing fluid worsens retention. Drink to thirst and beyond in hot weather.

Q: Is salt the problem? — Extreme salt intake does not help, and severe restriction is not advised in pregnancy either. Ordinary home cooking with normal salt is fine.

Q: My rings are stuck. — Remove them early, with soap and cold water, before it becomes urgent. Swelling usually increases through the third trimester.

Q: When does it go after delivery? — Often it briefly worsens in the first days as fluid shifts, then settles over one to two weeks. Sudden postpartum swelling with headache still needs a same-day check, because pre-eclampsia can occur after delivery.