My 8 month old Shih-tsu, has been going off of her food, she just has not been herself for a few days. Now she won't even drink anything, or eat, either, she has some diareaha, throwing up a yellow mucus, no energy. Just sleeps pretty much, We both seemed to get sick at the same time. She ate some rice for me one day, but that was all, now nothing for 2 days. She is always so bouncy & happy & loving, Can you pls tell me what may be wrong with her. i am a senior on pension, not a lot of money for high vet bills. She is with me all the time.