My lab has thrown up multiple times an hour for the last 4 hours. There is nothing in it. It is just a clear liquid with white mucus. She is acting normal, eating, drinking, wagging tail etc...It sound like she is trying to cough or gag and that is what comes up with the cough. She was just at the vet this past weekend and had her shots. Any ideas of what it could be or what to do. Anything I can give her to clear her throat or settle her stomach. Oh, she kept all her food down.