kami,
Our puppy was sick for about a week after being given her second round of shots. She threw up (and sneezed a lot due to the bordatella immunization), but Gerber's strained baby meats saved us. She loves the turkey and will eat it every two hours. We slowly weaned her off of it, and so far she is doing well on a high quality canned dog food. See if you can get mikko to eat baby food meats.
I know how rough this is for you. We were worried sick ourselves over our baby. It's so hard to watch them lose their playfulness and become lethargic and throw up.
Prayers to you and your baby. When she gets better, this will all just be a distant memory for you.