Hi,
I had the same with my Bitch soon after she was mated... I had a panic and took her to the Vets to be told that this was normal and not to worry :rolleyes:
They did give me some tablets that she could take... but I decided against that and the discharge carried on throughout her pregnancy and she delivered six very healthy pups within 3 hours and made it look so easy and it was her first litter

To clarify the discharge did not smell and was creamy and cloudy like you mentioned and this did not change throughout the pregnancy
Hope this helps put your mind at rest
Good Luck
Vicki & Curlies