I have an 8wk old AKC German shep female pup. I am the breeder and have 6 littermates with no problems. During the 1st week of weaning this pup she would eat and then vomit up her food(Puppy chow mixed with warm powdered milk) She would go back to the food and eat more and do the same. She finally stopped this and now eats dry food with no distress. BUT, I have noticed after she drinks water you can hear a gurgle sound when she runs, like it is still in her esophagus. Do I need to be concerned or will she grow out of this. She seems to have been growing at a slower pace than the other pups. She has been wormed 2 times and is due for her 3rd worming. What should I do?