http://www.valleyhumanesociety.org/k...th/index05.cfm
Congrats on your yorkie and Welcome to YT. Here is a link with all of the vaccine info. Feminvstr (a breeder on the forum) told me that shots should be no longer than 3 weeks apart, so the guide above will give you your timeline. Since you got puppy only last week and she is very young, i would suggest a vet visit for a puppy check ASAP. You will find great advice and stories on the boards here