I'm in the same boat. My cats approx. due in a week as well and the area around her nipples have swelled a small bit and have a pinky color.
Awww congratulations they're all so beautiful! Mama is a gorgeous cat. Thank you for taking such good care of her. Sure it's another cat adding kittens to the world, but at least she's not on the street with her babies, and can be spayed soon. There's always another way to look at the situation, I wish people understood that.Its okay for her to have a little blood right!? Kinda a dumb question but im such a worry wart! Lol and yes she has her only little den room nice and secluded fit with lots of blankies and a big sized box!