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See your doctor if you’ve never had heart palpitations but suspect you’re experiencing them now. They may be benign, but they can also be a symptom of underlying issues, especially if they happen along with other symptoms, such as:
trouble breathing
sweating profusely
confusion
lightheadedness
dizziness
fainting
chest pain
pressure or tightness in your chest, upper back, arms, neck, or jaw
source:
http://www.healthline.com/health/heart-disease/heart-palpitations-after-eating#risk-factors4