In Peripaum cardiomyopathy, cardiac failure occurs at:-

Diagnostic criteria for Peripaum cardiomyopathy - A) Development of cardiac failure in the last month of pregnancy or within 5 months after delivery. B) Absence of an identifiable cause for the cardiac failure. C) Absence of recognizable hea disease prior to the last month pf pregnancy D) Left ventricular systolic dysfunction demonstrated by classic echocardiographic criteria, such as depressed ejection fraction along with a dilated left ventricle