I have a 13 yr old f began cat that's never had any health problems. I found blood droplets around the house and she has been peeing outside the box. She only pees outside the box during the night/early morning before we're awake, but pees and poops in the box throughout the day. She pees about a golf ball size 4 times a day. Took her to the vet, they couldn't get a proper urinalysis because she peed in her carrier, but did blood work and collected a small sample. Showed no bacteria, but cloudy and some blood in urine. Prescribed amoxicillin liquid - she won't let me administer them with the dropper. They then gave me Baytril and I only administered one dose and she vomited and became very aggressively hissing. I haven't given her a dose in 48 hrs and she is better today. She is peeing on our bed and couch. She had this back in November after I changed her food and it went away 2 weeks later, but started again last week. Our entire house is covered in pee pads. I could try the liquid antibiotics again, but she is barely eating any wet food. I'm not sure what else to do, I am at a loss.