Thanks dear for your query.The signs and symptoms of pneumonia vary from mild to severe. Many factors affect how serious pneumonia is, including the type of germ causing the infection and your age and overall health. The symptoms include: - a high fever - shaking chills - a cough with phlegm - shortness of breath with normal daily activities -chest pain when you breathe or cough -Feeling suddenly worse after a cold or the flu People who have pneumonia may have other symptoms, including nausea, vomiting, and diarrhea. Some people have a fever and cough, or appear restless, sick, or tired and without energy. Older adults and people who have serious illnesses or weak immune systems may have fewer and milder symptoms. They may even have a lower than normal temperature. May be you have weak immunity and did not develope other symptoms