Hi, I am excited to be meeting our 4 week old puppy this weekend but I have a few concerns aswell. We were originally going to be chosing from 2 girls but one of them had fluid on the lungs and the vet had to put it down which is really sad. I’m worried that the rest of the pups could be sick and if there’s such a thing as a bad litter? The pups are apparently thriving. It’s the mums 5th litter aswell. I just want to make sure my pup is healthy. Thanks!