A 9 month old pregnant lady presents with jaundice and distension, pedal edema after delivering normal baby. Her clinical condition deteriorates with increasing abdominal distension and severe ascites. Her bilirubin is 5 mg/dl, S. alkaline phosphatase was 450u/L and ALT (345lu). There is tender hepatomegaly 6cm below costal margin and ascetic fluid show protein less than 2 mg% Diagnosis is: