omg, some one sold you a yorkie that is now only 7 weeks old.. oh my.. you need to protect that baby like that baby was your own born child..puppy needs three sets of shots.. and not just parvo..only after all three shots are given is puppy safe to be on strange ground what so ever..
If you ever saw a puppy getting parvo.. well I will not say.. but I had one.. and she was to have had all her shots.. from the breeders say so.. gave me papers..
well I got her mid december and by spring she has parvo.. she would never have survived if i had not scooped her up as soon as I saw her soft poop with blood in it.. drove three hours to a vet and she was there for a week.. at a cost of 1,200 for the week.. she survived and now has a weak stomach.. special food.. and I might add she was 6 months old when I got her and would never had dreamed the breeder did not give her her proper shots.. she was a show breeder to boot..
so please be careful.. I know it is hard but you need to keep that baby safe..anne