I have a 10 month old puppy and she is a mixed breed. She has blood coming out of her boobs. I took her to the vet and a swab did not show any signs of bacteria, she is on prolactin for dogs and on antibiotics for a week now. Her condition is not improving. Her boobs are still blueish and are discharging blood. Vets are baffled and they say that they have never seen anything like this before.