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 ?