I'm kind of worried because I'm experiencing this heaviness in my chest and sometimes have trouble breathing. Plus, there's this pain that hits suddenly, not all the time, but it can come out of nowhere. Should I be concerned?

The intermittent heaviness in your chest, breathing difficulties, and sudden pains may indicate underlying conditions such as angina, acid reflux, asthma, or anxiety attacks; to determine the cause, consult a cardiologist or a primary care physician for a thorough evaluation, including a physical examination, electrocardiogram (ECG), and possibly imaging tests like an echocardiogram or a chest X-ray.