Our Sophie woke us up during the night after she had vomited that yellow, foamy stuff that I think is bile related. No undigested food. After the second episode during the night, I gave her some Pepto-Bismol. An hour and a half later, she vomited again, more of the yellow bile mixed with pink Pepto-Bismol.
She's a bit frightened and clingy, but otherwise appears okay, wanting walkies, and no other symptoms.

Our Shih Tzu often vomited this yellow stuff, usually only one time per episode, and would eat a meal immediately after and be fine.
Sophie has absolutely no interest in food, not even her favorites. We cannot think of anything improper that she might have ingested. Any ideas?