Nausea Without a Bug: Watch for This Heart Warning

Discomfort or pain in the center of the chest that may feel like pressure or squeezing.

Shortness of breath or difficulty breathing without any apparent reason.

Pain or discomfort in one or both arms, back, neck, jaw, or stomach.

Feeling of indigestion or heartburn that doesn't go away.

Lightheadedness, dizziness, or fainting spells.

Fatigue or feeling extremely weak without any reason.

Cold sweats or clamminess.

Nausea or vomiting without any apparent reason.

Coughing or wheezing without any respiratory infection.

10. A sense of anxiety or impending doom.

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