Good morning! The baby has been cranky for two days now and is having…

Good morning! The baby has been cranky for two days now and is having trouble sleeping. This morning I noticed he was wheezing like in his nasal cavities with phlegm. When I lifted him, he coughed up green phlegm? Is it a cold? I'm very worried ? We can't find a normal pediatrician to solve the problem, they immediately prescribe antibiotics or useless medications ?