Pregnancy can cause discomfort and pain in many parts of the body. When these sensations occur in the chest, possible causes include pressure from the growing fetus, heartburn, and more.

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In rare cases, this chest pain can result from cardiovascular issues or complications of pregnancy.

Keep reading for more information about the causes of chest pain during pregnancy and when to see a doctor.

Many people experience pain or discomfort during pregnancy, and some of these sensations can mirror symptoms of cardiac conditions. These issues include:

These can be worrying, but often, they do not result from a serious health problem.

Some relatively harmless issues that can cause chest pain during pregnancy are outlined below.


When a person eats, a valve between the esophagus and stomach opens to let food into the stomach. This valve is called the esophageal sphincter.

When a person is not eating, the esophageal sphincter ordinarily closes to stop partially digested food and stomach acid from rising back up into the esophagus. If this does occur, the issue is called acid reflux.

During pregnancy, rising levels of the hormone progesterone cause the esophageal sphincter to relax, increasing the risk of acid reflux.

Acid reflux can cause heartburn, a burning sensation in the throat or mouth that is common after eating, particularly when the person is lying down after a meal.

The following strategies can help prevent heartburn:

  • avoiding spicy or greasy foods
  • eating smaller meals
  • remaining upright for longer after eating

A doctor or pharmacist may recommend taking an antacid for persistent heartburn during pregnancy. This type of medication neutralizes stomach acid, relieving the pain.

Growing uterus and fetus

As the fetus and uterus grow, this increases pressure on surrounding organs, including the lungs and stomach.

This pressure can cause discomfort and pain in the chest, typically during the second and third trimesters. Increasing pressure in the chest cavity can also cause:

  • a person to feel full more quickly while eating
  • a faster heartbeat
  • acid reflux
  • shortness of breath

A pregnant person who experiences the symptoms above should see a doctor to make sure of the cause.

The cause of chest pain during pregnancy may be a severe health issue, such as preeclampsia, a heart attack, or another heart condition.


Chest and shoulder pain during pregnancy can indicate a serious complication called preeclampsia. This can sometimes be fatal for the mother and fetus.

Common signs and symptoms of preeclampsia include:

Preeclampsia typically goes away once the baby is born. However, in some people, preeclampsia continues after pregnancy or begins after they have given birth.

People with preeclampsia may also experience related complications, such as eclampsia or a syndrome that involves rupturing of red blood cells, a low platelet count, and elevated liver enzymes — commonly called HELLP syndrome.

A pregnant person may not know that they have preeclampsia or related complications. Regular health checks and tests help doctors identify these issues.

Heart disease or heart attack

A relatively uncommon cause of chest pain during pregnancy is a heart attack.

During pregnancy the volume of blood in the body increases to accommodate the growing fetus. In order to pump the extra blood efficiently, the heart rate increases, and this added strain leads to a higher risk of a heart attack.

A 2018 study investigated the incidence of heart attacks among pregnant people in the United States who stayed in the hospital for complications of pregnancy or the adjustment period afterward. Heart attacks had occurred in 8.1 out of every 100,000 of these people.

People who have heart disease or other preexisting cardiac conditions have an increased risk of a heart attack during pregnancy.

The following symptoms can indicate heart disease:

  • chest pain
  • a fast heartbeat
  • a chronic cough
  • extreme breathing difficulties
  • extreme fatigue
  • extreme swelling or weight gain
  • fainting

A pregnant person who experiences any of the above symptoms should see a doctor immediately.

Pulmonary embolism

Another rare cause of chest pain during pregnancy is pulmonary embolism (PE).

During pregnancy, natural changes to the body make blood clots more common. In fact, pregnant people are 5 times more likely to develop blood clots than non-pregnant people.

A PE is a blood clot that blocks an artery in the lung. This condition can be fatal if not treated immediately.

PEs are rare, but they are still a leading cause of maternal deaths in the United States. In fact, about 10 percent of maternal deaths in the U.S. are from a PE. One-quarter of the PE-related deaths occur during pregnancy; two-thirds happen after delivery.

People who have a history of blood clots, varicose veins, or deep vein thrombosis are more likely to develop PE during or after pregnancy. People with excess weight or obesity are, too. A BMI over 30 puts a person at a higher risk, and the higher the BMI, the greater the risk.

Pregnant people who have a Caesarean-section delivery have a higher risk of developing blood clots. Immobility after delivery can increase chances, too.

The following symptoms can indicate PE:

A pregnant person experiencing these symptoms should see their doctor immediately.

Additionally, pregnant people should discuss preventative measures, especially if they have one or more risk factors for PE. Routine check-ups can also help detect possible blood clots.

In many cases, chest pain and discomfort result from relatively harmless issues. However, a pregnant person should see a doctor if they have any concerns about their health or that of the fetus.

It is important to attend every appointment with a doctor or midwife and to undergo every recommended test. These can indicate whether any complications have developed and ensure that the mother and baby are healthy.

Pregnant people who experience any symptoms of heart disease or preeclampsia during or after pregnancy should receive immediate medical care.

It is also crucial that pregnant people are aware of the symptoms of a heart attack. These include:

  • chest pain or discomfort
  • pain, pressure, or a squeezing sensation in the center of the chest that lasts for more than a few minutes or goes away and comes back
  • shortness of breath, which may be accompanied by chest discomfort
  • cold sweats
  • lightheadedness
  • nausea
  • discomfort or pain in the jaw, neck, stomach, back, or in one or both arms

A pregnant person who experiences any of these symptoms and believes that the cause may be a heart attack should call 911 immediately or otherwise seek urgent medical assistance.

Chest pain can be a harmless symptom of pregnancy. The cause is often heartburn or pressure as the growing uterus pushes against the organs in the chest cavity.

However, chest pain during pregnancy can indicate a more serious condition, such as a heart attack or preeclampsia. These require immediate medical attention.

Pregnancy can be a physically challenging time. Anyone with any concerns about their health or that of the baby should consult a doctor.