If heartburn during pregnancy has been creeping up on you lately, especially now that you’re in your third trimester, you’re in good company — up to 80% of pregnant women experience pregnancy heartburn by this stage. The good news? It’s not a sign that something’s wrong, and there’s a lot you can do to find relief.
What Causes Pregnancy Heartburn?
There are two main drivers behind pregnancy heartburn: hormones and mechanics. Progesterone, one of the key pregnancy hormones, relaxes the valve between your stomach and esophagus, making it easier for acid to travel upward. At the same time, your growing uterus pushes up into your abdomen, leaving your stomach and diaphragm less room to work — increasing pressure and pushing acid up even further.
How Breathing Affects Pregnancy Heartburn
Your diaphragm plays a bigger role in reflux than most people realize. Shallow, chest-based breathing increases abdominal pressure and can make heartburn worse. Practicing 360-degree (umbrella) breathing — expanding your ribs in all directions as you inhale — helps create more space for your diaphragm and can ease symptoms.
Simple Lifestyle Tips to Relieve Pregnancy Heartburn
Susan Winograd, MSPT, shares several practical strategies to manage pregnancy heartburn, including:
- Avoiding lying down right after eating
- Eating smaller, more frequent meals
- Sipping fluids between meals instead of during
- Sleeping on your left side
- Watching for common trigger foods (spicy, citrus, chocolate, caffeine)
- Chewing sugar-free gum after meals to boost saliva production
When to Talk to Your Doctor About Pregnancy Heartburn
If your reflux is severe or persistent — especially if it’s affecting your sleep, nutrition, or quality of life — reach out to your healthcare provider. Safe treatment options are available during pregnancy.
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