Why Am I Getting Heartburn While Pregnant? Guide to Acid Reflux in Pregnancy

• Eat healthy foods but space out your eating with smaller, more frequent meals.

• Avoid greasy or spicy foods, especially before bedtime.

• Avoid peppermint tea. While it may soothe your stomach, it also relaxes the oesophageal sphincter which acts like a trap door to acids in the stomach. Relaxing that makes it easier for stomach acids to back up into your throat.

• For the same reason, it is recommended that you avoid alcohol, carbonated drinks, caffeinated drinks and cow’s milk.

• Aim to stay upright for three hours after you eat and you can try to prop up your upper body 15-20cm when you sleep, making it more difficult for stomach acids to travel upward to your oesophagus.

Pregnancy brings many physical and hormonal changes, and one of the most common digestive concerns expectant mothers experience is acid reflux in pregnancy. This condition can cause discomfort, especially as your body adapts to support your growing baby. While occasional reflux may feel manageable, frequent episodes can interfere with sleep, eating habits, and overall well-being.

Acid reflux is a digestive system concern. Understanding why it happens and how it connects to heartburn is the first step toward relief. By learning about the causes and symptoms, you can take practical steps to manage discomfort and protect both your digestive and oral health during pregnancy.

Acid reflux during pregnancy occurs when stomach acid flows backwards into the oesophagus. Normally, a muscle called the lower oesophageal sphincter (LES) keeps stomach contents in place. During pregnancy, this muscle relaxes more easily due to hormonal changes, allowing acid to rise and irritate the lining of the oesophagus. When frequent or severe, this medical condition is known as GERD or gastroesophageal reflux disease.

When the lower oesophageal sphincter relaxes more than usual during pregnancy, it allows stomach acid to move upward into the oesophagus, leading to discomfort. This backflow can cause a burning sensation in the chest or throat, a sour taste in the mouth, and discomfort after meals. While it may happen at any stage, it becomes more common in the second and third trimesters as the uterus expands and adds pressure to the stomach.

Many women use the terms reflux and heartburn interchangeably, but they are slightly different. Heartburn during pregnancy is actually a symptom of acid reflux. It refers to the burning feeling in the chest that happens when stomach acid irritates the oesophagus. These heartburn symptoms can range from mild discomfort after meals to more persistent irritation that affects sleep and daily activities. Pregnancy hormones, especially progesterone, contribute to muscle relaxation and slower digestion, which increases the likelihood of acid reflux and heartburn.

The phrase heartburn pregnancy describes this common discomfort that affects many expectant mothers. Despite its name, heartburn has nothing to do with the heart. It is purely digestive. Hormonal shifts, especially increased progesterone, relax digestive muscles and slow digestion, making heartburn more likely after meals or when lying down.

Several factors explain why acid reflux is especially common during pregnancy. First, hormonal changes play a major role. Progesterone helps relax muscles throughout the body, including the valve that keeps stomach acid in place. When this valve loosens, acid can move upward more easily. As pregnancy progresses, increasing abdominal pressure can further worsen reflux episodes. The growing uterus places additional pressure on the stomach, making reflux more likely.

Second, physical pressure increases as the baby grows. The expanding uterus presses against the stomach, pushing acid toward the oesophagus. Slower digestion also means food stays in the stomach longer, increasing the chance of reflux. These hormonal and physical changes combined make reflux a frequent complaint during pregnancy.

Acid reflux can sometimes be confused with other pregnancy-related complications, such as Preeclampsia, although the two conditions are very different. While heartburn is the most recognised sign, acid reflux in pregnancy can cause a variety of symptoms. Some women notice mild discomfort, while others experience more persistent issues that affect daily life. 

Some women may experience regurgitation, where stomach contents move back up into the throat or mouth. Recognising these signs early can help you manage them effectively. Beyond the burning sensation, reflux may cause regurgitation, nausea, bloating, or a sour taste in the mouth. In some cases, symptoms can resemble morning sickness, especially when reflux leads to vomiting.

Common heartburn pregnancy symptoms include a burning chest pain, especially after eating or at night. The discomfort may worsen when bending over or lying flat. Some women also feel a lump in the throat or mild chest tightness. Other symptoms may include a sour or bitter taste in the mouth and frequent burping. Though uncomfortable, these symptoms are usually manageable with diet and lifestyle changes. However, persistent pain should always be discussed with a healthcare provider.

In some cases, reflux can lead to nausea or acid reflux pregnancy vomiting. When stomach acid reaches the throat or mouth, it can trigger gagging or vomiting. This may overlap with morning sickness, making it difficult to distinguish. Repeated vomiting exposes teeth to stomach acid, which can affect oral health. That is why it is important to take protective steps for your teeth and gums if vomiting occurs frequently during pregnancy.

Acid reflux in pregnancy not only affects digestion, but it can also impact your oral health. Stomach acid is highly corrosive, and repeated exposure can damage teeth and gums over time. Pregnant women experiencing frequent reflux should pay close attention to oral care. Since frequent exposure to stomach acid can gradually damage tooth enamel, overall oral care must be managed responsibly.  

Here are the main oral health risks associated with reflux:

• Enamel Erosion: Stomach acid can gradually wear down tooth enamel, the protective outer layer of teeth.

• Tooth Sensitivity: As enamel thins, teeth may become sensitive to hot, cold, or sweet foods.

• Increased Risk of Cavities: Weakened enamel makes teeth more vulnerable to decay.

After vomiting, rinse your mouth with water or a fluoride mouth rinse. Avoid brushing immediately, as enamel is temporarily softened and brushing may cause further damage. Wait at least 30 minutes before brushing gently. Taking quick action after reflux episodes can help reduce long-term damage and maintain a healthy smile. 

Managing reflux often starts with simple lifestyle adjustments. Many women find relief with home remedies for acid reflux during pregnancy, especially when symptoms are mild. However, approaching home remedies requires caution as not all are scientifically proven and safe. Understanding how to get rid of acid reflux safely is important, particularly during pregnancy when medication choices may be limited.

Here are some helpful strategies:

• Dietary Adjustments: Eating citrus fruits, fatty foods, spicy foods, and drinking carbonated drinks may trigger symptoms in some women. Avoiding large meals and choosing smaller meals throughout the day can help reduce pressure on the stomach. Certain supplements may also affect digestion, so it is important to review them with your healthcare provider.

• Lifestyle Changes: Sleep with your head elevated. Wear loose clothing to reduce abdominal pressure. Avoid lying down immediately after meals. Maintain a healthy pregnancy weight as advised by your healthcare provider.

• Over-the-Counter Options (as Directed): Some over-the-counter antacids may be considered safe during pregnancy and can provide temporary relief from acid reflux symptoms. However, it is important to consult your healthcare provider before taking any medication to ensure it is appropriate for you and your baby.

• Maintaining a Healthy Weight: A healthy weight during pregnancy is important for both the mother's and baby’s health, and unintentional weight loss due to severe reflux should not be ignored. If symptoms become frequent, painful, or interfere with eating and sleep, it is important to seek medical advice from a qualified healthcare professional. 

In some cases, when lifestyle changes and antacids do not provide enough relief, healthcare providers may recommend proton pump inhibitors (such as Omeprazole) to help reduce stomach acid and manage symptoms safely under supervision.

Along with reducing digestive discomfort, it is important to protect your teeth and gums. Frequent reflux or vomiting exposes your teeth to stomach acid, which can weaken enamel and increase sensitivity. Rinse your mouth with water or a fluoride mouthwash to help neutralise acids. Avoid brushing immediately, as enamel may be softened and more vulnerable to damage.

For some women, reflux symptoms can begin as early as the first trimester due to hormonal changes and may become more noticeable as pregnancy progresses. Because acid reflux in pregnancy can expose teeth to stomach acid, protecting your smile is essential. A gentle and consistent oral care routine can make a big difference in preventing enamel damage and sensitivity.

• Gentle Brushing & Flossing: Use a soft-bristled toothbrush and brush your teeth twice a day using gentle, circular motions. This helps clean your teeth effectively without damaging enamel that may already be weakened by acid exposure. Floss once daily to remove plaque and food particles from between teeth and along the gumline.

• Fluoride Use: Strengthen and protect your enamel by choosing a fluoride toothpaste specially formulated for sensitivity, such as Colgate Total Sensitivity & Gum Health Original. Fluoride helps remineralise enamel and reduce discomfort caused by acid wear.

• Rinse Before Brushing: If you experience vomiting due to reflux, rinse your mouth thoroughly with water or a fluoride mouthwash to help neutralise acids. Wait at least 30 minutes before brushing to avoid further enamel damage.

• Dental Check-Ups: Regular dental visits during pregnancy are both safe and important. Your dentist can monitor enamel health, provide preventive treatments, and offer personalised advice to protect your smile.

Preventive oral care supports not only your dental health but also your overall comfort and well-being throughout pregnancy.

1. What can I do to help with acid reflux while pregnant?

Start with small meals, avoid trigger foods, and stay upright after eating. Elevate the head of your bed while sleeping to reduce nighttime symptoms. If symptoms persist, a healthcare provider or a Gastroenterology specialist can offer safe treatment options. 

2. Can acid reflux affect the baby during pregnancy?

In most cases, reflux affects the mother’s comfort but does not directly harm the baby. However, severe or persistent symptoms should be discussed with a healthcare provider to ensure proper nutrition and overall health.

3. What causes acid reflux in pregnancy?

Hormonal changes, especially increased progesterone, relax digestive muscles. As the uterus grows, it adds pressure to the stomach. These combined factors increase the likelihood of reflux during pregnancy.