What’s wrong with my baby?

Sav

So this past week my 5 month old baby has gotten a runny/stuffy nose for the second time in a month! Just a few days ago I noticed she is starting to spit up a ton and sometimes even throwing up. She is now only eating 2-3 ounces at a time but usually eats 6-8 ounces each feed. She has only Had about 21 ounces today when she normally has 32-36 (it’s 9:00 pm where I am). Idk what’s going on. I don’t think she has a fever. She doesn’t seem fussy. Anyone else know what could be going on? Has anyone else experienced this?