A multi-parous P3L3 young lady who delivered normally 3 weeks ago suddenly developed dyspnea with cardiac failure. She has no H/O cardiac disease before /during pregnancy. She had tachycardia and peripheral edema. Her hemoglobin was 9 gm/dl. Her Echo has revealed an EF of 35%. Which one of the following is the most likely diagnosis?
Acute MI Deep vein thrombosis with pulmonary embolism Amniotic fluid embolism Peri-paum cardiomyopathy