Warning signs

Some pregnancy symptoms should not wait for the next appointment.

Most discomfort in pregnancy is not dangerous, but serious problems can begin with symptoms that appear ordinary. If a symptom feels severe, sudden or distinctly different—or you feel that something is wrong—contact the obstetric team or seek emergency care.

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Illustration of a pregnant woman calling for medical advice with her partner nearby

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For a life-threatening emergency, use the nearest emergency service.

Severe bleeding, seizure, collapse, chest pain or serious breathing difficulty should not wait for a clinic reply.

What to know

Understand your care and know what to do next.

Seek urgent assessment

Urgent warning signs include vaginal bleeding, fluid leakage, severe or persistent abdominal pain, fainting, seizure, chest pain, sudden or severe breathlessness, fever, or repeated vomiting that prevents you from keeping water or other drinks down.

If you feel faint, are severely unwell or have heavy bleeding, do not drive yourself. Call an ambulance or have someone help you reach the nearest emergency department safely. Do not wait for a clinic reply before seeking emergency care.

Heavy bleeding or fluid leakage
Chest pain, breathing difficulty or collapse
Seizure, fever or severe persistent pain

When headache or swelling needs urgent attention

A severe headache that does not settle—especially with blurred vision, flashing lights, pain below the ribs or sudden swelling of the face and hands—can be associated with pre-eclampsia and needs prompt assessment.

Pre-eclampsia can also first appear after birth. A previously normal blood pressure does not make new postpartum symptoms safe to ignore.

Persistent severe headache
Visual disturbance
Sudden facial or hand swelling

Know your baby’s usual movement

Later in pregnancy, a reduction or clear change in the baby’s usual movement pattern should be assessed promptly. Do not wait until the next day or rely on food, cold drinks or a home Doppler to provide reassurance.

You are best placed to notice a change in your baby’s usual movements. Trust that concern and contact your maternity team promptly, even if someone else feels reassured. There is no single movement number that fits every pregnancy; a change needs professional assessment.

Call when movements reduce or change
Do not rely on home heartbeat devices
Follow the maternity unit’s assessment advice

This guide provides general education, not a diagnosis or an individual pregnancy plan. Follow the advice given for your pregnancy and seek urgent assessment when warning symptoms occur.

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Sources for this guideCDC: urgent maternal warning signs NHS: pregnancy symptoms needing help