help please!!

I was going to ring my vet about this but they’ve just closed so i’m posting on here. I looked up saw her kind of flinging herself around (i just saw all the plants moving and she popped out the top) and after looking at her she seemed to have loads odd saliva in her mouth she made multiple spit bubbles and i know it can be a sign of respiratory infection i’ve just never seen it before. also not sure if it matters but she did have surgery at the start of the month incase that contributes to whatever just happened to my baby :(