Another Word For Heartburn - Sport Gen Z

Should I use "an" or "a" before the word "another"? If yes, when should use it. Or I can just use "another" without any of those articles (a/an).

People with heartburn may experience a burning, painful sensation in their lower chest. Daily heartburn may be a symptom of an underlying health condition. Sometimes, it warrants a visit to a doctor. Heartburn is a burning sensation from when stomach acid flows back into your esophagus due to your lower esophageal sphincter (LES) not closing properly.

another word for heartburn, It can happen after meals or on an empty ... articles - "another", "an another" or "a another" which one is ...