If you start to cough, become breathless soon after, and get a fever with a dry cough, that might be the reason for lung infections like pneumonia. The cough might happen periodically. These germs such as bacteria and viruses are to blame for it. Taking rest, drinking enough fluids, and talking to a doctor for help are the treatment steps which can include antibiotics if it is bacterial. Be sure to get a lot of rest and drink plenty of fluids.