23 y.O no history of cardiovascular prob mild chest pains and rapi heart beat (130bpm). Heart attack likely? Drink 5 hr energy regularly

Cut down. On the energy drink, and if your symptoms persist, go see a doctor. Heart attacks are very, very rare in someone your age. Drug induced rapid heart rate is very common. 5 hour energy is just bascially a whopper dose of caffeine, a drug.
Unlikely . A heart attack. Increased heart rate most likely secondary to the energy drink and caffeine that is in it. Stop energy drink. If still occurring see your doctor.