. I think I found an answer. Heart Attack, Stroke and Cardiac Arrest Warning Signs Quick Links: Heart Attack Warning Signs Stroke Warning Signs Cardiac Arrest Warning Signs Heart Attack Warning Signs Some heart attacks are sudden and intense — the “movie heart attack,” where no one doubts what’s happening. But most heart attacks start slowly, with mild pain or discomfort. Often people affected aren’t sure what’s wrong and wait too long before getting help. Here are signs that can mean a heart attack is happening: SOME TIME IT MIGHT BE THE STROKE AND OTHER TIME IT MIGHT BE THE HEART ATTACK.