Theymost oftenimprove in another 4 - 5 days.Symptoms may include:Chest painCough that does not produce much sputum or mucus (dry cough)Coughing up bloodDiarrhea, nausea, vomiting, and abdominal painFeverGeneral discomfort, uneasiness, or ill feeling (malaise)MalaiseMalaise is a generalized feeling of discomfort, illness, or lack of well-being.Read Article Now