Heartburn, or acid reflux, can be a familiar companion throughout pregnancy, but it often takes on a new intensity as you move into your third trimester. It's a common experience, and understanding why it might feel different now can bring a sense of clarity.
Why it shows up this trimester
As your baby continues to grow and descend, the uterus expands significantly, putting increased pressure on your stomach and diaphragm. This physical crowding can push stomach acid back up into your esophagus more easily. Additionally, the hormone progesterone, which relaxes smooth muscles throughout your body to support pregnancy, continues to keep the esophageal sphincter (the valve between your esophagus and stomach) more relaxed. This combination of mechanical pressure and hormonal influence often means heartburn can feel more pronounced and frequent in these later weeks.
What it tends to feel like now
In the third trimester, you might notice the familiar burning sensation in your chest or throat, but it can also manifest as a persistent cough, a sour taste in your mouth, or even a feeling of food coming back up. Many parents find it's particularly bothersome at night, making it challenging to find a comfortable sleeping position. The sensation might feel more intense after meals, especially larger ones, or when bending over. It's a distinct feeling that can sometimes be mistaken for other discomforts, so tuning into your body's signals is key.
