Pneumonia can affect you in many ways and sometimes no warning at all and that is the worse kind, that is what they call walking pneumonia when you just feel so unnecessary, because the kind with a cough and temperature and all the other things will slow you down to a crawl, walking pneumonia as they call it you feel bad for a minute and you come back and it slaps you down again until you realize this is not normal and you go for help, sometimes it's too late....the best to you...