My sister had hematemesis after having the stomach flu for two days. She had been vomiting every few hours, and her esophagus had suffered greatly. She didn’t know where the blood was coming from at the time, so she called her doctor.
He sent her to the hospital right away for an esophagus scoping. He found the small rips in the tissue, and he knew that the blood came about from the strain of vomiting.
All he could do was give her some medicine to ease the vomiting. It knocked her out, so she slept instead of throwing up. She didn’t cough up any more blood, because she was done vomiting.