thats a great idea poodlefan.
I have had numerous litters over the years, and worm my pups from 2 wks of age, and every 2 weeks until they leave.
I then give the pup a worm tablet in front of the new owners to show them how to do it.
I had one litter that had quite a lot of worms once, but found that this litter had more grass to play around than the others and related it to sniffing and chewing off the ground more, and as such pickup worms that way also.
I advised all new owners to worm every two weeks until they were 14 weeks old. this took care of the problem. but for a breeder to say they never have worms is quite ridiculous really, all dogs have worms to some extent.
best of luck with your new pup, I am sure all will be ok once treated by the vet on a more stringent course of worming than what your "breeder" (cant really call themselves a breeder with a response to you like that" ,
Some good advice would have been all that you needed I am sure.
again, good luck with those yucky worms....