[yorkie mad]

Tia had to stay in the hospital because she was bringing up foam and had blood in her poo. They suspected pancrititis.they done the blood work which seemed useless because they said mild pancrititis wouldnt show up in the tests so we cant rule that out. However another week of meds , this has been going on now for 3 weeks and at 4am this morning yet again she is throwing up again. waiting results for her poo samples but she thinks they will be negative. They have put her on a special diet of royal canine intestinal as they suspect she has an allergy to her regular food!( 4 years she has been on her regular food)I dont think theve got a clue , sorry to rant but my poor little girl is having meds chucked down her throat , denied any treats and the food she loves and is still bringing up foam. any ideas?