Heartburn, or acid reflux, is a common experience for many during pregnancy, and it often becomes more noticeable as you move into your second trimester. It's a sensation that can feel like a burning discomfort in your chest, sometimes extending up towards your throat. While it's certainly not comfortable, understanding why it happens and what might offer some ease can bring a sense of calm and clarity.
Why it shows up this trimester
There are a couple of key reasons why heartburn might start or intensify during weeks 14-27. Firstly, hormonal changes, particularly the increase in progesterone, cause the smooth muscles in your body to relax. This includes the esophageal sphincter, the valve that normally keeps stomach acid from flowing back up into your esophagus. When this valve relaxes, it's easier for acid to make its way up. Secondly, and increasingly significant in the second trimester, your uterus is growing steadily. This expansion starts to put physical pressure on your stomach, which can also encourage acid to move upward. Digestion can also slow down a bit during pregnancy, giving your body more time to absorb nutrients, but also potentially contributing to reflux.
