Heartburn vs acid reflux; heartburn vs nausea in the first case, heartburn is a symptom of acid reflux and both are not the same while in the later both are the symptoms of indigestion, and nausea can be the result of heartburn well, this is what heartburn is and a detailed answer to can heartburn last for days?. Gerd lasting for days. Gerd lasting for days heartburn during pregnancy (
