My puppy want eat the only thing she does is drink water and she stated throwing up this morning white foamy stuff.

Why is my puppy not eating is throwing up foamy stuff.

She could have anything from indigestion to parvo. When was the last time she was at the vet? What are you trying to feed her, and how old is she? Has she had any vaccines? Any other symptoms? Diarrhea? Lethargic? Has she been De-wormed?

She was at the vet two weeks ago, I'm feeding her her regular food that she normally eats daily.she is 9 months. She doesn't have Diarrhea and is going fine. She don't want to play or eat she just lays around.

Was the dog throwing up white foam two weeks ago?
No?
Now take it back to the vet.

Ok I will be taking her back today. Thanks!

Sounds like it could be something with the food. She could have an allergy to the food you are feeding her. You can try feeding her 1/2 cup of rice with 1/2 cup of boiled chicken, feed her very lightly for the next 24-48 hours. But if she continues to vomit through out the next 24 hours, bring her back to the vet. Make sure she has free access to fresh water 24/7.

Does your dog have any other strange symptoms? What kind of dog do you have? Bloat is another thing you should be watching and careful of. Is she panting or restless, acting strange at all? White foamy and retching are a sure tell sign of bloat, which can kill with in 24 hours. So if this is something that you are seriously concerned about than I would seek professional help from your vet.