I would ask for the x-rays too. If you have already been down this road with your little you know better than the doctor when the symptoms are presenting.
I feel that a lot of the time the Dr. Doesn't listen to the mom enough. Usually we (moms) KNOW whats happening even before the infection takes hold to provide the fever.
I shopped around for a good Doc that would listen to me. I don't run my kids for every snotty nose and cough...but when it's serious, I just know and take them in.
Stick to your guns Momma!!!! I'm sending healing prayers your way too!!!!