Nausea
Nausea or feeling sick on your stomach is a less common but possible symptom of a heart attack. Sometimes belching or burping can accompany the nausea, and some patients have described a feeling like indigestion associated with a heart attack. Women are more likely than men to report these less typical symptoms of a heart attack, and some patients have described feeling as though they are developing the flu.
Heartburn and/or indigestion
Some people experiencing a heart attack can have belching and burping and describe a feeling of indigestion. Likewise, the pain and pressure of a heart attack may occur in the epigastric or upper middle abdominal area, similar to the pain of heartburn.
