This isn't about YOU. This isn't about YOUR dog. This is about the 4-14 puppies that will be born. Our shelters are overflowing already. People on this very forum are part of dog rescues and fostering puppies and dogs that don't have a permanant home. Why would you risk bringing MORE homeless puppies into the world?
ETA: I put down 3 canines minimum a week because they can't find a home. And that is ONE vet, imagine all over the state/country/world!