Not eating, lethargic, vomiting

I have a 7month old puppy named Rabbit,
he's usually alot to handle running all over the place getting into trouble. He hasnt been himself lately, he's been lethargic and doesnt even run to greet us when we get home. i havent seen him eat in 2 days and he gags as if he's trying to throw up but there is nothing left. I dont know what to do.. please help...

[Margot49]

Sorry to hear this. What you need to do is get him to a Vet for a thorough examination.  Those symptoms can be caused for any number of reasons and there may be a possibility he has ingested something.  Please take him in to get checked ASAP.