1. Chest Discomfort
It’s the most common sign of heart danger. If you have a blocked artery or are having a heart attack, you may feel pain, tightness, or pressure in your chest.
"Everyone has a different word for that feeling," Chambers says. "Some people say it's like an elephant is sitting on them. Other people say it's like a pinching or burning."


2. Nausea, Indigestion, Heartburn, or Stomach Pain
Some people have these symptoms during a heart attack. They may even vomit, Chambers says.
Women are more likely to report this type of symptom than men are.
Of course, you can have an upset stomach for many reasons that have nothing to do with your heart. It could just be something you ate, after all. But you need to be aware that it can also happen during a heart attack.
So if you feel this way and you’re at risk for heart problems, let a doctor find out what’s going on, especially if you also have any of the other symptoms on this list.

3. Pain that Spreads to the Arm
Another classic heart attack symptom is pain that radiates down the left side of the body.

"It almost always starts from the chest and moves outward," Chambers says. "But I have had some patients who have mainly arm pain that turned out to be heart attacks."

4. You Feel Dizzy or Lightheaded
A lot of things can make you lose your balance or feel faint for a moment. Maybe you didn’t have enough to eat or drink, or you stood up too fast.

But if you suddenly feel unsteady and you also have chest discomfort or shortness of breath, call a doctor right away.

"It could mean your blood pressure has dropped because your heart isn't able to pump the way it should," Bufalino says.

5. Throat or Jaw Pain
By itself, throat or jaw pain probably isn't heart related. More likely, it's caused by a muscular issue, a cold, or a sinus problem.

But if you have pain or pressure in the center of your chest that spreads up into your throat or jaw, it could be a sign of a heart attack. Call 911 and seek medical attention to make sure everything is all right.

6. You Get Exhausted Easily
If you suddenly feel fatigued or winded after doing something you had no problem doing in the past -- like climbing the stairs or carrying groceries from the car -- make an appointment with your doctor right away.

"These types of significant changes are more important to us than every little ache and pain you might be feeling," Bufalino says.

7. Snoring
It’s normal to snore a little while you snooze. But unusually loud snoring that sounds like a gasping or choking can be a sign of sleep apnea. That’s when you stop breathing for brief moments several times at night while you are still sleeping. This puts extra stress on your heart.

Your doctor can check whether you need a sleep study to see if you have this condition. If you do, you may need a CPAP machine to smooth out your breathing while you sleep.

8. Sweating
Breaking out in a cold sweat for no obvious reason could signal a heart attack. If this happens along with any of these other symptoms, call 911 to get to a hospital right away. Don’t try to drive yourself.

9. A Cough That Won’t Quit
In most cases, this isn't a sign of heart trouble. But if you have heart disease or know you're at risk, pay special attention to the possibility.
If you have a long-lasting cough that produces a white or pink mucus, it could be a sign of heart failure. This happens when the heart can't keep up with the body's demands, causing blood to leak back into the lungs.
Ask your doctor to check on what’s causing your cough.