Over60 millionAmericans get it once a month but most people can treat it with over-the-counter medication.
To be clear, heartburn technically has nothing to do with the heart.
However, there are times when heartburn is not just a symptom ofacid reflux.

This is why doctors have tests like X-rays, endoscopies and esophageal motility testing,Mayo Clinicnotes.
But, what does it mean if your heartburn happens more at night?
If you already have heartburn, it can intensify at night.

According toMedicineNet, consuming a lot of carbonated drinks and using sleeping pills can also bring on nighttime heartburn.
PerWebMD, wearing tight clothes also puts you at the risk of nighttime heartburn, and so does beingoverweight.
Meanwhile, nighttime heartburn could also happen because of pregnancy (viaParents).
Eight out of every ten people expecting a baby experience heartburn, notesBaby Center.