In Peripaum cardiomyopathy, cardiac failure can develop anytime during

Diagnostic criteria for peripaum cardiomyopathy: Development of cardiac failure in the last month of pregnancy or within 5 months after deliveryThe absence of an identifiable cause for the cardiac failure, The absence of recognizable hea disease prior to the last month of pregnancy, and Left ventricular systolic dysfunction demonstrated by classic echocardiographic criteria, such as depressed ejection fraction or fractional shoening along with a dilated left ventricle (Ref: William's Obstetrics; 25th edition)