The constant coughing could cause muscle
strain and chest pain
. Sometimes the pleura, the lining of the chest
cavity and lungs can get inflamed causing pain with coughing. So, the pain could be attributed to the lung disease.
But angina or cardiac pain many a times can be missed by a routine ECG. In which case, a treadmill or an exercise ECG may help. If you are a hypertensive, diabetic and overweight, you fall in the high-risk group.