How Can Fever Along With Cough And Chest Infection Be Treated?

, my son is, 1 year and 2 weeks old last month he got fever and after that cough and chest infection he was administered cefpodoxime antibiotic forseven days and he was ok after one week he got fever again and doctor advised to do blood test. Blood and urine culture were negative. CRP was 45 and TLC was 12000 Dr ruled out the case of pneumonia because x-ray was normal. doctor thought it was a secondary infection and give the antibiotic amoxicillin and potassium clavulanate it was given full 5 days he was ok again after 2 weeks fever record fever record and me and doctor told to wait for two or three days but one down with fever last lasted only one day it was gone yesterday he got 102 degrees give Paracetamol and meftal fever came down doctor asked to do the blood test and now CRP is 108 and TLC 22000 but he is active. Now no fever. Urinetest normal. He has no chest infection. Ocold. Wat is the reason for this value. Now on azithral 100 liquid