What Are The Signs Of Mercer Pneumonia?

I was diagnoised with mercer and pneumonia.  I was in I.C.you. For 3 days.  I still feel lousy.  What can I do to feel better?  I am afraid and need to know what to do.  I know rest and sleep.  I called my doctor.  He said to call him back if it worsens.,,I do not want to drive this man nuts,

Still afraid
Diana