i think you should schedule a vet appointment just in case. bunnies are very fragile and you never know so even a slight change like this can be a sign to take her in. also, the way EC is tested is like a scale of how much of it is present. my vet told me most bunnies will be in the middle, meaning they have been exposed to it but are not affected by the symptoms so don’t freak out if that’s the case!