Rough night, baby cold?

Amber • Mom to Max- born 4/21, New baby EDD 2/11/20
I'm up with my son and he's congested and coughing. He seems in good spirits and is smiling but I feel terrible. He's struggling a little while feeding. Hoping it's not a cold. We had to keep the AC unit on all day today, I'm wondering if maybe it just irritated his sinuses/throat.