No no no. A thousand times no. You need to get your puppy vaccinated and out and about ASAP. How will you socialise your puppy if he or she hasn't been vaccinated? How will you exercise them and get them used to a collar, lead, harness and going for a walk? How will you get them used to cars, other dogs, cats, lorries, crossing the road, road signs, car horns, trains, cyclists and all the other things you need to expose them to when they're young? You won't want to be carrying around a wriggly, heavy and excitable 17 week old puppy - believe me!
Plus, the main socialisation window closes at 16 weeks. If you wait too long you're going to have an unsocialised puppy on your hands and that's really not something you want to deal with. Unsocialised dogs tend to be reactive towards other dogs (and people) and, speaking from experience, you don't want to be living with a reactive, scared dog for the next 10+ years. It's horrible.
That's not to mention the risk of things like parvovirus. Puppies die from parvo all the time in this country - normally because people think the puppies have immunity from their mothers, or because they think their puppy has been vaccinated when that's not the case at all.
You mention getting the puppy wormed etc. at the vets but ideally this needs to be done at two weeks of age, then every couple of weeks until they're 12 weeks, then monthly from then on. Will your breeder be doing all of that if she believes in "rearing puppies naturally" (whatever that's supposed to mean)?