Newborn sick of fluid after c-section?

Mackenzie

I have a 1 week old who was delivered via c-section. Her pediatrician that we visited 4 days ago said the “congested” sound we’re hearing is her working through the fluid in her body that hasn’t made its way out yet. I’m scared she has a cold (her older sister does), but no fever and nose frida isn’t pulling anything out. Does anyone else have experience with this? I’m very nervous for her.