Remember how your digestive tract slows down when you're pregnant? Well, that doesn't just slow things down in the bathroom. A slow digestive tract means the food in your stomach sits there longer, which can cause a feeling of heartburn. Stomach acid can also leak back up your esophagus, causing a burning after eating. Your doctor can prescribe something to help with the burning. Try eating small, frequent meals to avoid having a stomach full of food. Drink lots of water throughout the day, but cut back while eating. This will keep your stomach from getting too full.