Yes: Bile is normally excreted into the portion of the small intestine immediately beyond the end of the stomach. During retching, it is very possible for that bile to reflux into the stomach, leading to the yellowish/greenish color of the vomit. Usually this happens on an empty stomach, since food tends to neutralize the effect of bile irritation on the stomach. You might try taking some crackers
Answered 7/2/2014
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