"And Bellas blood was thick in BD because Edward had just bit her and she was starting to transform. If you read carefully, it describes his venom coursing through her veins, making it thick and transforming her."
"*sighs* Vampires don't have blood in their bodies. Only when they've just hunted. Then when their new borns, their blood still courses in their bodies for a year or so. Other than that, there's no blood in their bodies except for when…"