Talk to Pediatrician on Chest Congestion And Cough

My 1.5 months old baby has congestion by birth. Tried steam nebulising coferb drops norsaline drops but no improvement at all. He’s still congested and has a wet cough. Visited his peads he told to nebulise him with clenil and atem. Koi farq nhi para uss se bhi. Kya mujhe antibiotics start krni cahhiye? Baby is comfortable white sleeping and feeding No fever motions or vomiting Just severe chest congestion with wet cough. Allah na kray is this a symptom of pneumonia? Kab tak jaye ga congestion as it is concerning me a lot now.