sick baby

Alexis
Hi all, 
I have a three and a half month old and he just got sick. I'm waiting until 7am to take him to the emergency pediatrics because I don't want to take him to regular urgent care. 
My question is what has the dr prescribed or recommended for a congestion? I see buggers in his nostrils and I take them out as frequent as possible and I hear congestion in his chest. He has also choked in his saliva like 3 times this past night.