Seek Medical Attention
Pneumonia, as earlier stated, is a serious infection and not one that an individual can recover from without medication. It is important you seek medical help when you start noticing the symptoms of pneumonia and ideally when the illness is in its first stage.
Reference:
[1] https://www.bassadvancedurgentcare.com/post/four-stages-of-pneumonia
[2] https://medlineplus.gov/pneumonia.html