A rare illness known as chronic constrictive pericarditis (CCP) causes the pericardium to thicken and fibrose, which restricts heart function. On the other hand, pulmonary hypertension (PH) is a chronic condition marked by increased pulmonary arterial pressure and pulmonary vascular resistance that eventually results in right ventricular failure and mortality. Due to the non-specific clinical presentation of CCP and PH, it can be simple to ignore this rare and difficult diagnosis. Here, we provide a case study of a 47-year-old woman who experienced severe dyspnea and had previously experienced three miscarriages, the most recent of which had happened two months before her presentation. The patient was identified as having CCP and PH after a thorough evaluation and inquiry. This case study seeks to highlight the importance of a high index of suspicion for CCP and PH in patients presenting with dyspnea and a history of pregnancy-related complications. Our case report emphasizes the significance of taking chronic constrictive pericarditis into account in individuals who have right ventricular failure and unexplained dyspnea. Early detection and quick pericardiectomy treatment can significantly improve symptoms and outcomes. To manage cardiovascular risk factors and keep an eye out for any potential recurrence of symptoms, long-term follow-up is required.