Preeclampsia: Why Pregnancy Checks Matter and Which Symptoms Need Help

Get immediate medical advice for a severe persistent headache, vision changes, pain below the ribs, sudden swelling of the face or hands, or feeling very unwell during pregnancy or in the weeks after birth. Contact your maternity unit or an urgent medical service and explain that you are pregnant or recently gave birth.

Preeclampsia can develop without symptoms at first. Routine checks matter because high blood pressure or other changes may be found before you notice a problem. It is usually diagnosed after 20 weeks, but symptoms should be assessed whenever they occur.

Know the symptoms that should not wait

Warning signs include a headache that does not settle with simple pain relief, blurred vision or flashing lights, pain beneath the ribs and rapidly increasing swelling of the face, hands or feet. Vomiting, heartburn that does not improve with treatment and feeling very unwell can also need immediate assessment.

Do not wait for the next appointment or assume these changes are ordinary late pregnancy discomfort. A reassuring earlier check does not rule out a new problem. If symptoms return after an assessment, contact the team again. Our pregnancy abdominal pain guide discusses other reasons pain may need urgent care.

Understand what the checks are looking for

Preeclampsia involves high blood pressure and can affect organs such as the liver or kidneys, blood clotting and the baby’s growth. Protein in urine is a common finding, but the condition can occur without it. Diagnosis requires a clinical assessment rather than symptoms or one home reading alone.

Assessment may include blood pressure, urine and blood tests, and checks of the baby’s wellbeing. Tell the team about all new symptoms, including when they began. The prenatal appointment guide explains why repeated routine checks remain useful even when you feel well.

Treatment and birth decisions are individual

Care may involve closer monitoring, blood pressure medicine, hospital admission and a discussion about when birth is safest. Severe disease can require treatment to reduce seizure risk. Do not start aspirin or calcium supplements for prevention without advice from a clinician.

Ask what is being monitored and which changes would alter the plan. You can request the explanation again if the recommendation feels sudden.

Continue care after birth

Preeclampsia can first appear after birth, and existing disease may still need treatment and monitoring. Ask who will check your blood pressure and review medicines after discharge. A medical review is generally arranged at 6 to 8 weeks, with earlier review when needed.

New warning symptoms require immediate help rather than waiting for that review. Share the contact instructions with someone supporting you during recovery.