Have experienced many symptom of a heart attack, does it mean i'm going to have one?

Doctor can evaluate: Doctors cannot predict when a particular patient will have a heart attack. Doctors usually talk about the risk of having a heart attack. If a patient has a 25% chance of a heart attack in 2013, that means out of 4 such patients, 1 will have a heart attack. However, 3 out of 4 such patients should not have a heart attack that year. A doctor can evaluate probable heart attack symptoms, right away.

Dr Kwok is right: I would add, additionally, that if you are having any symptoms attributable to heart attack, that you need to see a doctor, in person, asap. Health tap may help you get the right answer, but if you're the 1 out of 4, you might not get your answer until too late.