# Heartburn at 29 Weeks Pregnant

Source: https://www.pregnancypowerhour.com/pregnancy/symptoms/heartburn-week-29
Last updated: 2026-07-01

> At 29 weeks pregnant, heartburn often becomes more noticeable as your growing uterus puts upward pressure on your stomach, making symptoms worse when lying flat.

Heartburn at 29 weeks pregnant often intensifies as your body continues to make space for your baby, with the upward pressure from your expanding uterus playing a significant role in this discomfort. Many expecting parents find that this sensation, sometimes described as a burning feeling in the chest or throat, becomes more noticeable as they move further into the third trimester. This is a very common experience; evidence suggests that a significant percentage of pregnancies will encounter heartburn, with symptoms frequently peaking in these later weeks. The physiological changes happening within your body contribute to this. Your body is producing more progesterone, a hormone essential for pregnancy, which also has the effect of relaxing the lower esophageal sphincter—the valve that separates your esophagus from your stomach. When this valve is more relaxed, stomach acid can more easily travel back up, leading to that familiar burning sensation.

Compounding this natural hormonal shift at 29 weeks is the physical reality of your growing baby and uterus. As your uterus expands upward, it begins to exert pressure on your stomach. This physical compression can push stomach acid back into the esophagus, making heartburn symptoms more pronounced, especially when you lie flat. It's a gentle reminder of the incredible work your body is doing to nurture new life, even if it comes with some uncomfortable sensations. Understanding these underlying causes can bring a sense of clarity, helping you make informed decisions about how to approach your comfort. Just as you might be navigating other common bodily changes, like shifts in vaginal discharge that sometimes lead to [Yeast Infection Symptoms in Pregnancy at 10 Weeks Pregnant](/pregnancy/symptoms/yeast-infection-symptoms-week-10), recognizing the specific triggers for heartburn at this stage can be incredibly empowering.

When considering options for relief, there are several evidence-based approaches that many find helpful. For immediate, mild relief, calcium carbonate antacids, such as Tums or Rolaids, are widely considered a first-line option and are generally safe to use across all trimesters. These work by neutralizing stomach acid. If you find that these over-the-counter options aren't providing sufficient comfort, or if your heartburn is more persistent, your care provider might suggest other avenues. For instance, famotidine, known commercially as Pepcid, is considered safe when antacids alone aren't enough to manage your symptoms. For those experiencing more significant or frequent heartburn, especially as you move deeper into the third trimester, omeprazole and other proton pump inhibitors (PPIs) are generally considered safe options. Discussing these with your provider allows you to collaboratively decide on the best path for your unique situation.

Beyond medication, practical, gentle adjustments to your daily routine can also make a difference. Elevating the head of your bed by 6-8 inches can be particularly effective in reducing nighttime symptoms, as it uses gravity to keep stomach acid where it belongs. Eating smaller, more frequent meals, avoiding trigger foods, and staying upright for a while after eating are also strategies many parents find helpful. Just as you might adjust your routine to manage other common pregnancy experiences, such as the changes you might notice around [Yeast Infection Symptoms in Pregnancy at 11 Weeks Pregnant](/pregnancy/symptoms/yeast-infection-symptoms-week-11) or [Yeast Infection Symptoms in Pregnancy at 12 Weeks Pregnant](/pregnancy/symptoms/yeast-infection-symptoms-week-12), these small shifts can significantly improve your comfort with heartburn. Remember, you get to decide what feels right for your body, and your provider is your best resource for your specific situation and to ensure any choices align with your overall health plan.