Can U hav prolonged (on & off pain all day) stress cardiomyopathy symptoms (or heart pain caused by stress). As opposed to just one significant event?

CM not painful. Cardiomyopathy is not painful. It's damaged heart muscle that leads to impairment of the pumping action of the heart. It usually leads to shortness of breath with exertion. You may be talking about Takotsubo cardiomyopathy which seems to be associated with a very high level of stress, usually an acute event. but again, not painful. It's diagnosed by echocardiogram and resolves in most cases.