Please let us know how it goes. Dead worms in poop makes me think your puppy may have contracted a parasite somehow. Hopefully the vet can treat that and the puppy will recover. Shyness is definitely a possibility anytime an animal is getting to know a new person, especially if they are not used to meeting a lot of new people, which a puppy would not be since it is so young. The moaning when you pick it up does sound like it could be a stomach or intestinal issue though, making being picked up hurt. I haven't had a dog myself, but I am very interested in this since it sounds like something that could happen with other baby animals as well.