When to call

Get urgent medical help if you have given birth in the last few weeks and have any symptom of pre-eclampsia. The NHS is explicit that this applies after birth, not only during pregnancy: "If you've recently given birth or cannot call your maternity unit, call 111."

The symptoms to act on, from the NHS:

a severe headache that does not go away with simple painkillers
vision problems, such as blurred vision or seeing flashing lights
pain below the ribs
sudden swelling of the face, hands or feet
feeling very unwell
heartburn that does not go away with heartburn medicines
being sick (vomiting)

The NHS adds: "Any of these symptoms can be serious and need to be checked immediately."

If you are monitoring your blood pressure at home, ACOG says to call right away for a reading of 140 mmHg or higher on top, and/or 90 mmHg or higher on the bottom.

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

The part nobody tells you

Most people believe pre-eclampsia ends when the placenta comes out. It usually does. But not always, and the NHS states the exception plainly on its main pre-eclampsia page: "Sometimes pre-eclampsia develops in the days or weeks after your baby is born."

ACOG is more specific about the window: "Postpartum preeclampsia most often happens within a few days after delivery, but it can occur up to 6 weeks later." And it makes the point that catches people out: some women who develop it after delivery are women "who had normal blood pressure during pregnancy."

So a clear antenatal record is not protection, and neither is being discharged. If you are three weeks post-birth with a headache that will not shift and blurred vision, this belongs on your list of possibilities.

What pre-eclampsia is

NICE defines it as new high blood pressure (over 140 mmHg systolic or over 90 mmHg diastolic) after 20 weeks of pregnancy, together with protein in the urine or evidence that another organ system is affected — kidneys, liver, blood, or the nervous system. The NHS puts the same idea in plainer language: high blood pressure plus signs that your organs are not working normally.

The NHS notes that the early signs — raised blood pressure and protein in your urine — are ones "it's unlikely that you'll notice." That is why the symptoms above matter so much after discharge: they are the part you can actually detect.

Why it is worth acting fast

Untreated, the NHS lists possible complications including seizures (eclampsia), HELLP syndrome (a liver and blood disorder) and stroke. ACOG's summary is the same: "Untreated, preeclampsia can cause stroke, seizures, and other serious problems." Treated, it is manageable — blood pressure medication, and sometimes an intravenous medicine to prevent seizures.

What monitoring should look like

If you had pre-eclampsia before or during the birth, NICE's hypertension in pregnancy guideline (NG133) sets out what should happen afterwards. For women not on blood pressure medication, blood pressure should be measured at least four times a day as an inpatient, at least once between day 3 and day 5, and on alternate days until normal if it was abnormal on days 3 to 5. For women who were on treatment, it should be measured every one to two days for up to two weeks after transfer to community care, until they are off treatment and have no hypertension.

NICE also tells staff to "ask women with pre-eclampsia who have given birth about severe headache and epigastric pain each time blood pressure is measured." If nobody has asked you, say it unprompted.

Two follow-ups are recommended: a review with your GP or specialist two weeks after transfer to community care if you are still on medication, and a medical review 6 to 8 weeks after the birth for everyone who had pre-eclampsia, including a urine dipstick test at that point.

NICE's postnatal care guideline (NG194) also lists "symptoms and signs of pre-eclampsia" among the things a midwife should assess at every postnatal contact, and names "persistent or severe headache" as a symptom needing action.

What it means longer term

This is where honest information beats reassurance. NICE advises women who have had a hypertensive disorder of pregnancy that the overall risk of recurrence in a future pregnancy is "approximately 1 in 5," and that having had one is "associated with an increased risk of hypertension and cardiovascular disease in later life." For pre-eclampsia specifically, NICE's tables put the increase in major adverse cardiovascular events at roughly 1.5 to 3 times, and the increase in the risk of later hypertension at roughly 2 to 5 times, compared with women who had no hypertensive disorder in pregnancy.

That is not a reason to be frightened; it is a reason to have the conversation. NICE recommends discussing how to reduce cardiovascular risk with your GP or specialist — not smoking, keeping a healthy weight, and the standard lifestyle guidance. If you had pre-eclampsia and still have protein in your urine at the 6 to 8 week check, you should be offered a further review at three months to assess kidney function.

What actually helps

There is no home remedy for pre-eclampsia, and it is not something to manage with rest and paracetamol. What helps is early detection. If you had pre-eclampsia, ask before discharge who is checking your blood pressure and when. If you are at home and a headache will not shift with simple painkillers, or your vision changes, or your face and hands swell suddenly, treat that as a phone call rather than a wait-and-see. The HSE lists "headache, blurred vision or vomiting" after birth as signs of pre-eclampsia that mean contacting a GP, midwife or public health nurse immediately.

Postpartum Pre-eclampsia