Bladder stones: Just a FYI for other cat lovers. I have never had a cat have this issue before so it took a while to figure it out. My Annika had blood in her urine, sometimes it would settle most times not. We had moved house so thought she was stressed. She was peeing on the carpet, which she never did before. Vet put her on some calm drops, didn't work. Antibiotics didn't work. We had her urine tested, nothing showed. This is over 12mths mind you. More blood tests revealed some crystals. More blood tests to come. Finally stumped, the vet scanned her tummy, and there it was, a bladder stone (2 actually). Annika had surgery 3 weeks ago now and is one happier cat. She showed no other symptoms and I googled lots and only came up with stress issues as I was doing all I could to find the problem as well. So this is just an info share, that, continued blood in urine may be bladder stones which can only be found by a scan. I felt really bad it took me so long to sort but glad I persevered.