I'm sorry your baby isn't feeling well. The same thing happened to Sophie. The vet told me to sprinkle 1/4 teaspoon of tylan powder on her food. It was a prescription. It stopped her runny bloody stools right away. He also gave me something called fira flora...that's not exactly right, but your vet probably will know what it is. It's something to settle her stomach. I sprinkled 1/2 a packet on her food morning and night for a month. My vet couldn't find anything wrong with Sophie and suspected she just ate something she shouldn't have. This was a month ago and she's been fine ever since. I hope your baby is well soon.