Hello! My baby girl is 12 years old and just today suddenly she started throwing up, having diarrhea, then peed in the house. This is very unlike her. Then she could not walk very well. She walks like she is drunk and she is constantly falling when she walks or stands. I took her to the vet and they did blood work and x rays and everything came back normal. The past month she has been itching her lower back and she has bloody sores. Does this have anything to do with it? What is happening to her? This happened so fast. Please help.