I have a 3 year old toy chihuahua I adopted last Friday, He woke me up at 2am, and there was wet and dry dog poop all over my room (some with mucous bloody looking liquid) - and he hasn't pooped in the house up till now. I took him to the vet, he said it was because of the diet change and environment change. I paid $100, got a bunch of exams, special food and medicine. Then I took him for a walk. I'm stressing out so much, I got my answer from the vet but I feel so overwhelmed. Any words of encouragement? I feel awful. He is my first dog.