I think you're doing all the right things Anita. Maybe you could try Phoebe on some very bland food later on & see if it stays down (scrambled egg, chicken & white rice). If she's still being sick today, then you do probably need to take her to the vet just to be on the safe side. Also, while you do have to keep a sick dog hydrated, big drinks of water tend to come straight back up again so very small drinks of room temperature water (maybe just a teaspoon at a time at very frequent intervals) would be the way to go if she's still vomiting today.
Hope Phoebe feels better soon
Jane