If by “signs that your heart is not right” you mean warning signs of a heart problem, there are several symptoms worth taking seriously. Heart disease can sometimes be silent, so symptoms alone cannot confirm whether the heart is healthy.
🚨 Symptoms that require immediate attention
Call 911 immediately if you have symptoms that could indicate a heart attack—especially if they are new, severe, persistent, or occurring together. The American Heart Association and CDC recommend emergency evaluation rather than waiting to see whether symptoms disappear.
1. Chest pressure, squeezing, or pain
This is one of the most important warning signs.
It may feel like:
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Pressure, heaviness, squeezing, tightness, or fullness in the chest
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Burning or aching
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Discomfort in the center or left side of the chest
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Pain that lasts several minutes or goes away and returns
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A sensation that something is sitting heavily on your chest
A heart attack does not always cause dramatic or unbearable pain. Symptoms can sometimes be mild.
2. Pain spreading to other parts of the body
Heart-related pain can occur outside the chest, including the:
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Left or right arm
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Shoulder
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Back
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Neck
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Jaw
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Upper abdomen/stomach
This is particularly important when the discomfort occurs together with chest pressure, sweating, nausea, dizziness, or shortness of breath.
3. Shortness of breath
Feeling unable to get enough air can be a heart warning sign, with or without chest pain.
For example, you may notice that you suddenly become unusually breathless while walking, climbing stairs, or even while resting. Shortness of breath can also occur with heart failure.
4. Unexplained extreme tiredness
Unusual fatigue can sometimes accompany heart problems.
Pay particular attention to new or unexplained exhaustion, especially when it occurs together with breathlessness, chest discomfort, dizziness, sweating, or nausea. Women experiencing heart attacks may be more likely to have unusual tiredness or weakness.
5. Dizziness, lightheadedness, or fainting
Feeling as though you may pass out—or actually fainting—can sometimes be associated with an abnormal heart rhythm or inadequate blood flow.
Sudden severe lightheadedness accompanied by chest discomfort, shortness of breath, or palpitations warrants urgent medical attention.
6. Rapid, pounding, or irregular heartbeat
You may feel:
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Your heart racing
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Fluttering in your chest
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Skipped beats
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Strong pounding
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An irregular rhythm
Palpitations can have many causes, including anxiety, caffeine, medications, or an abnormal heart rhythm. Because it can be difficult to distinguish these causes yourself, recurrent or concerning palpitations should be discussed with a healthcare professional.
7. Cold sweating
Breaking out in an unexplained cold sweat, particularly with chest discomfort, nausea, dizziness, or shortness of breath, can be a warning sign of a heart attack.
8. Nausea, vomiting, or unusual indigestion
Heart attacks can sometimes feel like a stomach problem.
Nausea, vomiting, indigestion, or discomfort in the upper abdomen can occur with heart attacks. These symptoms may be especially easy to dismiss as food poisoning, acid reflux, or an ordinary stomach problem.
❤️ Signs that can occur with heart failure
Heart failure doesn’t necessarily mean the heart has stopped. It means the heart isn’t pumping blood as effectively as the body needs.
Possible symptoms include:
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Shortness of breath during ordinary activities
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Difficulty breathing when lying flat
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Waking up short of breath
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Persistent cough
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Significant fatigue or weakness
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Swelling of the ankles, feet, legs, or abdomen
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Rapid or unexplained weight gain from fluid retention
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Loss of appetite or nausea
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Difficulty concentrating
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Bluish lips or fingers in more advanced cases
New or worsening breathlessness, swelling, or rapid weight gain should be reported to a healthcare professional because these can indicate increasing fluid buildup.
👩 Heart attack symptoms in women can be less obvious
Although chest discomfort remains the most common heart-attack symptom in women, women can also experience symptoms such as:
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Unusual fatigue or weakness
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Shortness of breath
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Nausea or vomiting
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Back, shoulder, neck, or jaw discomfort
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Indigestion or stomach discomfort
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Lightheadedness
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Cold sweating
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Anxiety or a feeling that something is wrong
This means absence of severe chest pain does not rule out a heart attack.
⚠️ Symptoms you shouldn’t simply “watch and wait”
Seek medical evaluation for symptoms that are:
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New or unexplained
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Becoming more frequent
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Happening with physical activity
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Getting progressively worse
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Occurring together—for example, breathlessness + chest pressure + sweating
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Associated with fainting or a very fast/irregular heartbeat
Coronary artery disease can sometimes have few or no obvious symptoms until a serious event occurs.
🚑 When to call 911
Call 911 now if you or someone with you has possible heart-attack symptoms such as chest pressure/pain, shortness of breath, pain spreading to the arm/jaw/back, cold sweating, nausea, or sudden lightheadedness. Don’t wait for symptoms to become severe and don’t drive yourself if you may be having a heart attack. Emergency medical services can begin care while transporting you.
Also, if someone suddenly becomes unresponsive and isn’t breathing normally, this may be cardiac arrest and requires 911, CPR, and an AED if available.
Important
These symptoms do not automatically mean you have heart disease—many can also come from lung problems, reflux, anemia, anxiety, infections, medications, and other conditions. The important point is that certain combinations, particularly sudden chest discomfort or breathing difficulty, need prompt evaluation rather than self-diagnosis.
If you’re asking because you are experiencing symptoms right now, tell me exactly what you’re feeling (for example: chest pain, heartbeat, breathing, dizziness, arm/jaw pain, sweating, nausea), when it started, and whether it is happening right now. If you currently have chest pressure/pain, severe shortness of breath, fainting, or symptoms spreading to your arm/jaw/back, call 911 rather than waiting for a chat response.