possibly she has pheumonia. My son got pheumonia a few years ago

the Ped thought it is Pheumonia but not sure about which type and gave one type of antibiotics, after 7 days, it was not working well, so he thought it is another type and prescribed different antibio. A few weeks later, my other son also started with similar sympton, when I brought him to see doctor, it was a different female ped, I told her that my son might have pheumonia since my other son just got it and she insisited it was not, and would not give antibiotics, two days later, I have to bring my son in again and this time it is the ped my other son saw, and it was pheumonia too, after taking antibio, my son recovered in a few days.