Blood in the Vomit
When vomiting, especially after multiple episodes of vomiting close together, kids can sometimes get small tears in their throats that will cause some bleeding to occur and show up in vomit. This will go away on its own after the kiddos stop vomiting. But if you have more blood in the vomit than little drops or pink-tinged vomit, then your kiddo needs to be seen in the emergency room right away to find the bleeding source.