What are the signs of a heart issue even though my ekg is normal?

Cardiac evaluation: You may need a treadmill stress test. Laboratory blood work such as: fasting lipid panel, C reactive protein, homocysteine, basic metabolic panel. If you have swelling in your feet and lower legs or chest pain with exertion see your doctor ASAP. If the chest pain feels like an elephant is standing on your chest, have sweating and shortness of breath call 911 immediately.

Heart symptoms: Usually chest pain or pressure lasting more than 20 minutes made worse with activity or worsening shortness of breath.

Breathing chest pain: Feeling short of breath at rest, with normal activities, or when lying down. Leg or abdominal swelling. Feeling like you will pass out. Pain in the center of the chest sometimes radiating into the jaw, back, abdomen or arm.