This case involves a pregnant female who presented to the emergency room at thirty-five weeks complaining of shortness of breath, chest pain, and an increased heart rate. The patient was admitted, diagnosed with pneumonia, and sent to the ICU for close observation. No additional testing or cardiovascular imaging studies were performed and the patient was transferred to a medical step-down floor. The patient died soon after her transfer and the cause of death was determined to be a massive pulmonary embolism. The physicians on the patient’s case claim that they considered the PE as a possible differential diagnosis but no further tests were done to rule out this life-threatening condition.