Shacols

Hi, we have a 10 week old pup. We have been told by the vet she can not go outside till 2 weeks aftee her last needles so at 18 weeks. The reason being we live in a high parvo area and have only been in our house for 3 months so not sure if any dogs lived in the yard. Can anyone help with toilet training. I started with a few puppy pads where she tends to go which is back and front door. She is hit and miss more times miss. Thanks