Hopefully she's okay

So I have three small kittens and the three are named Kenny, Sandy and Wendy. They're sooo cute and fluffy!!<3 But recently there's been a problem with the kitten named Wendy. She started to do strange noises while trying to breathe from her mouth, at first it was weird and confusing until I found out that Wendy was having issues with breathing through her nose. Right now she's completely fine, but either way I'm still kinda concerned about her. Hopefully it was just a temporary nasal obstruction and nothing worse; either way I'm still going to bring her to the vet tomorrow morning just too verify if everything is 100% okay.