i have bred litters of puppies before and towards the end of the pregnancy the bitches have had a clear jelly like discharge hanging from the vulva the bitch i have now doesnt have this but has a thick creamy white discharge is this normal in some bitches please help

It sounds like she may have an infection of some sort, get her to the vet and get it treated before the pups arrive. How far gone is she?

Good luck

Do a search fo this subject there are some interesting threads about it!
try white disharge after mating- on the breeding board.
If your lucky someone who can do a link may come along and help you I have tried twice and failed miserabley! :(