I talk my puppies out after the first set of shots. I just use common sense… and I do not believe in keeping them in a glass "bubble" until all the shots are given. I don't go to dog parks, I do not let them sniff poop from other dogs that people don't pick up. I take them to Lure Trials, Dog shows, etc. I have NEVER had a puppy get sick from doing that and I believe that it builds up their immune system to be out and about as soon as possible. And especially after the second shot.
I think the reason that people were giving you mixed messages is that it seemed that your pup was younger then what you were told.
Do you have recent pictures, like from the last couple of days we could see?