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Bitter taste

Sometimes acid escaping from your stomach can make its way into the back of your throat, leaving an icky, bitter taste in your mouth. In really extreme cases, this can cause choking.

If that happens—especially at night—you should see a doctor. "I'm very aggressive with therapy if patients wake up choking," says Dr. Coyle, adding that he usually recommends acid-suppressing medications like proton pump inhibitors, H2 blockers, and antacids. (Dr. Coyle is on the Speakers Bureau for Takeda Pharmaceuticals, which markets proton pump inhibitors).

Next: Hoarseness