Agree with Coach. I do not think you are well versed in any kind of home canine care to be giving your own shots yet. If you need a fecal exam done just return them and let the vet do what they should do. It took me years before I was confident and educated enough to do anything at home. It would be in your dog's best interest to let a vet take care if her.Yes, like JTP said, you need to pull up the skin and give the shot in the skin you pulled up... But honestly, I think it's best for you to just return the shots and take her to the vet to get it done. You need to go in for a fecal test anyway since she had all those worms. Chances are she probably has others, and since you got her so young an exam would be a good idea to make sure her heart and everything is ok.