Pepto is kayshas friend : )
When she gets an upset tummy she gets a small dosage and it calms her right down(keep in mind she weighs about 6 pounds! hence the small dosage haha), I don't change her food from what she gets because she has such a sensitive appetite anyways. Before horse shows she gets herself worked up pretty bad. She must be thinking she is going to be left and she gets her dose before we leave and keeps her settled for the weekend. If she doesn't get it she cries the whole way down and moans and I can hear her poor tummy skweeling! If the big dogs get into something or catch something they also get pepto and everything usually settles in about 12 hours.
Hope the tummy calms down soon!!!