I know just how you feel, My karleigh has that, She was very sick and had to stay over night also, I was told by my vet it was from table scraps an sensitive bellies, She was on meds for 2 weeks, It still flares up once and a while with her, she is 3 yrs..No more table craps and only certain treats, Will keep praying for your baby..please pm me if i can be of help