Yes I am a Nurse hereidrawtheline.
My only experience with Pneumonia is my DD1 had it last January and was hospitalised for 48 hrs for Intravenous Antibiotics.
It took her some tome to recover,maybe a month and her immunity was pretty low,so i had to keep her away from everyone for a few weeks.Her breathing was ok afterwards,but she was pretty lethargic.
It is quite debilitating,hence why there is now a vaccine for the Elderly (mainly) and one for under 2's as it can be very serious.
Pneumonia is often a complication of a pre-existing condition or infection,and is triggered when an person's immune system is weakened, most often by a simple viral upper respiratory tract infection or a case of 'Flu.
Pneumonia can be caused by bacteria, viruses, mycoplasma, and fungi.Obviously a Pneumonia caused by bacteria can be treated quickly with Antibiotics,the other causes just have to "clear" by themselves,which is very slow.
It may be a good idea to be seen and checked again,as you may not be "recovering" properly,or may have a secondary infection,such as Bronchitis etc.
HTH,I'm ok just recovering from a gynae op (TMI )