This might be easily solved by someone with more experience than me, but I'm kind of at a loss as to what to do. A few days ago when I was filtering the milk from my Nubian, I noticed a small bit of tissue with a little bit of blood in it at the bottom of the filter. I didn't think much of it until that night, when I found more little bits of bloody tissue in her milk again. The next morning the milk from her right udder was pink. There is no redness on the teat; she's not hot and she's not overly irritated when milking her. I took a sample to the vet and it tested negative for mastitis with the CMT. The milk seemed to be less pink yesterday at both milkings. This morning halfway through her milking I felt a small blockage and had to squeeze a tiny bit harder than usual, but once it passed she milked just fine without much irritation. I've been throwing the milk out from that udder, but I filtered it today and found another little bit of bloody tissue. The tissue is small, maybe 1 or 2 cm. She's a 3-year-old full Nubian. I've only had her a week but got her from a reliable owner, who's always had great success with her. Is this mastitis but there wasn't enough bacteria growing yet to read positive on the CMT? Or a broken capillary or udder breakdown? Not sure what to do.