Severe coughing during intercourse is more commonly related to a respiratory issue like Asthma or airway sensitivity, as physical exertion can trigger coughing or breathlessness. It is less commonly due to a heart problem, but if there are symptoms like chest pain, palpitations, or severe breathlessness, a cardiac check-up may be needed. Consult a doctor for proper evaluation so the exact cause can be identified and treated.

It is advised to check with a doctor as soon as possible. It could be related to conditions like asthma, respiratory infection, or even heart-related issues. Early evaluation and treatment can help prevent complications and improve your breathing.