If you cannot get your breathing under control, or shortness of breath seems to be increasing for you, it may be time to contact your doctor. However, anything more strenuous and especially if you are over the ages of 45, you should first see your doctor for advice. These can help look for initial signs of disease, which may be easier to treat if detected early. With medications like antibiotics, it is especially important to finish the prescribed course. These include pursed lip breathing and expanding your lower chest.
Smoking is the single largest cause of lung cancer.
Smoking also contributes to the risk of cardiovascular disease. Don't overexert yourself. Know your limits and learn to pace yourself. While you may not notice immediate benefit from some of your medication, they have long term beneficial effects. Don t delay in seeing your doctor when ill.