dizziness in pregnancy

Overview

Dizziness is a feeling of being light-headed, unsteady, or about to faint. In pregnancy, it is common and usually harmless. It happens because your body changes to support your baby, and blood flow and hormone levels shift.

Yes. Dizziness affects up to 7 in 10 pregnant people at some point, especially in the first trimester and again near the end.

Pregnant people of any age. It is more likely if you are anaemic, having twins, or already have low blood pressure.

Symptoms

Common symptoms

• Light-headedness or feeling faint
• Unsteadiness or swaying
• Blurred or 'greying' vision
• Sweating or clamminess
• Weakness or tiredness

Symptoms in children

• Not applicable. Dizziness in pregnancy affects only pregnant people. If a child feels dizzy, that has a different cause and needs separate medical advice.

Symptoms in older adults

• Not applicable. This condition is specific to pregnancy. Dizziness in older adults is different and should be assessed by a healthcare provider.

Causes

Main causes

• Hormone changes loosen blood vessel walls, lowering blood pressure
• The growing uterus presses on a major vein when you lie on your back, reducing blood flow to your brain
• Low blood sugar if you skip meals or are not eating enough
• Low iron (anaemia) from increased blood volume needs
• Dehydration, overheating, or standing for a long time

Risk factors

• Having anaemia or low iron levels
• Carrying twins or more
• Already having low blood pressure
• Being in quite hot environments
• Not drinking enough fluids
• Standing up suddenly from sitting or lying

When to see a doctor

See a doctor urgently if:

• Any fainting episode, especially if you fall or hit your head
• Dizziness with bleeding or pain in the abdomen
• Dizziness with blurred vision, headache, or sparkling spots
• Dizziness with chest pain or difficulty breathing

Book a routine appointment if:

• Frequent dizziness affecting your daily life
• Concerns about whether it is normal
• Persistent tiredness or breathlessness that might suggest anaemia
• Before your next scheduled prenatal appointment if you are worried

Diagnosis

Your midwife or doctor will ask how often you feel dizzy, what you are doing when it happens, and whether you have any other symptoms. They will also check your blood pressure and may feel your pulse.

Tests that may be done

• Blood pressure measurements, including lying and standing blood pressure
• Blood tests to check for anaemia or low iron
• Blood sugar tests if you are dizzy after long gaps between meals
• In some cases, an ECG to check your heart rhythm (if there are concerns)

What to expect at your appointment

A pregnancy check-up usually takes about 15 minutes. You do not need any special preparation, but it helps to note when your dizzy episodes happen and what you ate or drank beforehand.

Treatment

Treatment for dizziness in pregnancy is mostly about preventing episodes and staying safe. If a medical condition like anaemia is causing your dizziness, treating that condition will usually improve your symptoms.

Self-care at home

• Stand up slowly from sitting or lying down
• Avoid standing still for long periods — shift your weight, walk a little
• Lie on your left side rather than your back, especially after 20 weeks
• Drink plenty of fluids throughout the day
• Eat small, regular meals with protein and slow-release carbohydrates
• Get some fresh air if you feel faint, and sit down with your head between your knees

Medical treatments

If your dizziness is caused by a specific problem such as anaemia or low blood pressure, your healthcare provider will recommend appropriate treatment — for example, iron supplementation or adjusting how you rest. They may also advise you to monitor your blood sugar. No medicines for dizziness are typically recommended in pregnancy, except for treating an underlying cause.

When is surgery considered?

Surgery is not part of treatment for dizziness in pregnancy. Surgery is only considered if testing finds a separate problem, which is very rare.

Living with this condition

Dizziness can be worrying, but most days you can manage it with a few adjustments. Take your time with movement, keep water nearby, and never ignore that faint feeling — sit or lie down before you fall.

Lifestyle tips

• Plan to rest when needed, especially later in pregnancy
• Wear comfortable shoes and loose clothing that does not compress your lower body
• Ask for help lifting or carrying heavy things
• Keep a snack, such as a banana or a few nuts, in your bag

Diet and exercise

Eat regular balanced meals with iron-rich foods like leafy greens, beans, and lean meat. Sip water through the day. Gentle exercise like walking or prenatal yoga can help circulation, but stop if you feel light-headed.

Mental health and emotional wellbeing

Feeling dizzy and worried about fainting can make you anxious and limit what you feel like doing. It is normal to feel concerned. Talk to your midwife or doctor about your worries — they have heard this from many people.

Prevention

You cannot always prevent dizziness in pregnancy, but simple daily habits can make episodes less frequent and less severe.

Vaccines

No vaccine prevents dizziness in pregnancy. Following your routine pregnancy vaccinations is still important for your overall health.

Screening programmes

Your prenatal check-ups include blood pressure checks and blood tests that can find problems like anaemia early. There is no special screening just for dizziness.

Complications

If left untreated

• Fainting and falls, which can cause injury to you or your baby
• Falls after 20 weeks of pregnancy can be more serious because of your changing balance
• Undiagnosed anaemia can make you very tired and affect your energy throughout pregnancy

Long-term outlook

For the vast majority of pregnant people, dizziness improves with simple measures and disappears soon after birth. If an underlying cause is found, treating it usually eases symptoms. With your healthcare team’s help, you can stay safe and focus on the excitement of your pregnancy.

Find support

External links open third-party websites. Ruqelo Health is not responsible for external content. Listing an organisation does not imply endorsement.