Pneumonia is caused by infection of the viruses or bacteria and also by fungi and parasites. The sign of the diseases is a dry cough, chest pain, fever, and trouble breathing, depending on the fundamental cause. 

The general symptoms of the Pneumonia are discussed below

• A cough with some pneumonia greenish or yellow saliva, or even bloody saliva.
• Fever can be slight

https://www.qries.com/What-are-the-symptoms-of-Pneumonia/answer/Daneel-Yunus