Swelling in Feet, Ankles and Hands — and When It Isn't Normal

When to call

This section comes first deliberately, because the difference between ordinary swelling and the kind that needs urgent assessment is easy to miss when you are tired and your shoes do not fit.

Contact your maternity unit, midwife or doctor immediately — the same hour, not the same week — if you have:

• A sudden increase in swelling in your face, hands or feet. The NHS uses exactly this wording. The RCOG describes it as "rapidly increasing swelling of your face, hands or feet."
• Swelling together with a severe headache, particularly one that simple painkillers do not shift.
• Swelling together with vision problems — blurring, or seeing flashing lights.
• Swelling together with pain just below your ribs, vomiting, or heartburn that antacids do not touch.
• Swelling together with feeling severely unwell.

These are the symptoms of pre-eclampsia. The RCOG's instruction is unambiguous: "These symptoms can be serious and you should seek medical help immediately if you develop any of them." ACOG gives the same advice for readers outside the UK: "If you have any of these symptoms, especially if they develop in the second half of pregnancy, call your ob-gyn right away."

Contact a doctor urgently if one leg is affected on its own — particularly if one calf is "red, hot or tender", as the HSE puts it. Tommy's notes that unexplained swelling, with or without pain, in one leg can be a sign of a deep vein thrombosis (DVT), and treats it as a medical emergency. It reports that around 1 in 1,000 pregnant women or birthing people develop a DVT during pregnancy — rare, but more common than outside pregnancy.

Call your local emergency number (999 in the UK and Ireland, 911 in the US and Canada, 000 in Australia, or 111 in New Zealand) if you have a seizure, collapse, or become suddenly and severely breathless or develop chest pain.

Why pregnancy makes you swell at all

The NHS gives two reasons: "your body holding more water than usual when you're pregnant", and "the pressure of your growing womb can also affect the blood flow in your legs." The HSE describes the same mechanism — "as your womb grows, it can put pressure on the circulation to the lower part of your body", and "during pregnancy your body also holds more fluid than usual. This extra fluid can collect in your legs and ankles."

Gravity does the rest, which is why the pattern is so predictable.

What ordinary swelling looks like

Tommy's gives four features, and they are the most useful checklist on this page. Swelling that is part of normal pregnancy:

• is often worse at the end of the day
• happens in late pregnancy
• comes on gradually
• gets better when you lie down

The NHS agrees that it tends to worsen "at the end of the day and further into your pregnancy", and that this kind of swelling "is not usually harmful to you or your baby, but it can be uncomfortable." The HSE says gradual swelling "can be uncomfortable, but it's usually not harmful to you or your baby", and notes it may be worse in hot weather or after standing.

Typically it affects both legs roughly equally, and the legs, ankles, feet and fingers rather than the face.

What is different about pre-eclampsia swelling

Three things separate it, and it helps to hold all three in mind rather than any one alone.

It is sudden, not gradual

Every source uses the word. The NHS: "a sudden increase in swelling." ACOG lists "sudden weight gain" alongside swelling of the face or hands. The HSE: "a sudden increase in your swelling could be a sign of pre-eclampsia."

It involves the face and hands

Puffy ankles at the end of a hot day are ordinary. A face that looks different in the mirror, or hands that swell up over a day rather than over weeks, is a different observation. ACOG lists "swelling of face or hands" as a symptom; the HSE lists "sudden swelling of your hands, feet, ankles, neck or face" among the early symptoms.

It rarely travels alone

The headache, the visual changes and the rib pain are what turn swelling into an emergency. Tommy's frames it as a combination: a sudden increase in swelling in your face, hands or feet, "especially combined with a very bad headache or dull headache that won't go away, or vision problems such as blurring or flashing lights."

Some context on pre-eclampsia itself

Knowing the scale of the thing makes the advice easier to follow rather than more frightening.

• The RCOG says pre-eclampsia "is a condition that affects between 1-5 in 100 pregnant women", affecting up to 5 in 100 in a first pregnancy and fewer than 2 in 100 in a second.
• "Around one in 200 women develop severe pre-eclampsia, which can be life-threatening for both you and your baby" (RCOG).
• It usually happens after 20 weeks. Tommy's notes that "most cases of pre-eclampsia happen after 24 to 26 weeks, usually towards the end of pregnancy." Both the NHS and ACOG note it can also develop for the first time in the days or weeks after birth.

Here is the point that matters most, and it is one that swelling-focused articles usually bury. The RCOG states: "Often you will have no symptoms and pre-eclampsia may be diagnosed for the first time at your routine antenatal appointments." The two early signs are high blood pressure and protein in your urine — neither of which you can feel. ACOG defines the blood pressure threshold as 140/90 mm Hg or higher, with severe hypertension at 160/110 mm Hg or higher.

Which means: swelling is a prompt to get checked, but the routine appointment is the actual screening test. Attending those appointments does more for you than watching your ankles.

What actually helps ordinary swelling

None of this prevents pre-eclampsia, and no source claims it does. These are comfort measures for the ordinary kind.

• Put your feet up. Tommy's suggests resting with your feet above the level of your hips.
• Avoid standing for long periods (NHS, Tommy's, HSE).
• Foot exercises. The NHS and HSE both describe the same routine: bend and stretch your foot up and down about 30 times, then rotate it in a circle 8 times in each direction.
• Cold compresses for swollen hands and fingers. The HSE suggests wetting a flannel or face cloth with cold water and holding it around the swollen part.
• Keep drinking water. Counter-intuitively, Tommy's advises drinking plenty of water; the HSE says the same.
• Stay gently active — regular walks (NHS).
• Comfortable, loose shoes (NHS, Tommy's, HSE).

Be honest with yourself about what these achieve. They make the day more bearable. They do not change the underlying fluid shift, and swelling that meets the ordinary pattern will usually persist in some form until after your baby is born.