I have a 3 month old german sheppard she was very playful and full of energy I wormed her because she was looking as if she was losing weight now she won't eat, play and is lossing a lot of weight she had the parvo shot already I don't no what to do I feel as if my dog is dying right before my eyes and I am heart broken I can't afford to get her to a vet until next week please any advice would be truly appreciated