Vomiting of blood or hematemesis refers to blood in your vomit. Blood in vomit can be bright red in color or it may be black or dark brown and appear like coffee grounds.
Blood that is swallowed from a nosebleed or bleeding from the throat may make vomit appear bloody, but real vomiting of blood is more serious and requires immediate medical attention. Vomiting of blood may mean bleeding from your upper gastrointestinal tract.
This type of health problem really needs immediate attention, before resulting to another serious problem. Health is very important so we need to focus on prevention.
You need to see a health expert in case you are experiencing blood in your vomit.