Cheddar has always been a sicky cat. Have had her bloods done, and all fine. She eats and drinks well. And Is fine in herself. I thought it was diet related so swapped her to grain free food. She does seem better on this. But is still vomiting every 2-3 days. I've got some probiotic powder that I can re start. Does it take awhile for her gut to settle down on. Re food? Any ideas?