Lbbb, pre excitation, shortness of breath, exercise intolerance, can't do daily activities, extreme fatigue, chest pain. restrictive cardiomyopathy?

Chest pain,fatigue,: Various cardiomyopathic states can cause your symptom complex ,what does your Echo cardiogram reveal? LBBB and pre excitation can compound the reported symptoms;please consult with a cardiologist with an interest in these areas

Restrictive CM rare: With all the electrical conduction abnormalities you describe, especially if the echocardiogram was otherwise normal, an electrical problem, or arrhythmia, is more likely the cause of your symptoms; rather than restrictive cardiomyopathy. Restrictive cardiomyopathy is a rather rare condition. In order to get the best diagnosis, revisiting a thorough history and physical may help. See cardiologi