Severe lung congestion should not be managed with self-medication because the correct treatment depends entirely on identifying the underlying cause, which can range from respiratory infections such as bronchitis and pneumonia to chronic conditions like asthma, COPD, or even heart-related conditions. A proper clinical evaluation with diagnostic tests, such as chest X-rays, blood work, or oxygen level monitoring, is necessary to determine whether targeted prescription treatments, such as antibiotics, antivirals, or therapeutic inhalers, are required. Because you have described your congestion as severe, please seek professional medical attention immediately so a doctor can safely examine your lungs. If you are experiencing critical warning signs like extreme difficulty breathing, chest pain, a high fever, or bluish lips, you must go to the nearest emergency room or call for urgent medical help right away.