Is my baby sick?

hmmm....or just teething. My mom watched her today. She threw up 3 times enough to make my mom change pants twice. She did not eat her corn this afternoon. She only ate 4oz all day at each feeding. She was perfectly fine with me. She was not running a fever. She seem perfectly fine and normal not cranky or irritable. She took some good naps. What or What is going on with my baby? Or did she just miss mommy?