Hello, my dog Bailey is 12 3/4 years old. 3 1/2 days ago she started stumbling and falling down to the left. She also tilted her head to the left. The Emergency Vet I took her to suggest she has Vestibular Disease and also noticed a significant heart murmur which was also new. I was sent home with some anti nausea meds and told that the symptoms should improve in 48-72 hours. Over the next few days the stumbling and falling down and the head tilt switched to the right side and is more prominent, it also seems that she is walking good in the front, but the hind legs walk on an angle to the right. She will not lift her head to look up to my face, even if I sit down on the floor. In Vestibular Disease, can the side of the head tilt switch?