If you were feeding your babies dry food and now are giving them just wet that can be the reason for the runs but if you see blood every time then you need to get them to a vet. Also I would go back to what you were feeding before this started. good luck to you and your babies
great stories I have 6 cats all saved from a harsh life on the streets.My latest I call pirate as she has a old injury that dosen't allow her to bend her back leg found her on a rainy night with 3 newborn kittens in a pile of trash