Hi friend,
Welcome to Health Care Magic
A long list of questions and answers! - but lacking in important data!...You have not stated your personal habits, family history or co-morbidities, even age, gender...which could have an influence on the diagnosis and outcome...
This conglomeration is highly suggestive of Anxiety
Neurosis... Yet, it should rather be an exclusion diagnosis than a primary proposition. See a cardiologist first.
A thorough history and physical examination is the first step -
ECG (Electrocardiogram / EKG) – Routine 12-lead – is part of clinical examination.
HOLTER (24 to 48 hour ambulatory monitoring) is done to analyse and plan for further management, if a routine ECG does not show. It may also detect silent (no symptom)
ischemia.
ECHOcardiogram is necessary to see the heart valves (
Mitral Valve Prolapse) / heart muscle (
Cardiomyopathy) and heart function (
Ejection fraction, wall motion abnormality) / clots...
TMT (Treadmill exercise ECG) is done to exclude Ischemia (reduced blood flow).
LABORATORY work-up is routine - like blood counts, sugar, urea, electrolytes (potassium in particular),
thyroid (over-active) and so on.
Your Internist shall suggest based on the situation. They are necessary to exclude - if not to rule in / even if the chances are little... If negative, go for Psychological assessment and assistance...
Take care
Wishing speedy recovery
God bless
Good luck