Brief Answer:
Not usually.

Detailed Answer:
Hello and welcome,

Upset stomach is not usually a symptom of a heart attack. Nausea can be, but would not be a main symptom of a heart attack. Sometimes acid reflux can cause chest pain called "heart burn" and this needs to be distinguished from a heart attack.

But in a young man with definite stomach/GERD symptoms such as belching and stomach pain, this would not be attributable to the heart.

Consider taking non prescription Zantac (ranitidine) 150 mg twice a day for 2 weeks to see if this makes your symptoms better. You may need to continue it for 6 wks total if you find it helps but does not completely relieve the problem.

For now, avoid alcohol, caffeine, tomatoes, OJ and other acidy foods, mint. Eat smaller amounts at a time so there is less pressure on the lower esophagus for food or acid to come up.

Please let me know if I can provide further information or clarification.

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