Hello doctor, last night I had pain in the middle of my abdomen, like stomach pain and I was vomiting blood, the pain part was hard. The doctor told me that pain in the middle of the abdomen, vomiting blood is a warning sign of a dangerous disease?

Severe abdominal pain is sometimes caused by mild conditions such as bloating, or the cramping pain of viral gastroenteritis. Conversely, little or no pain may indicate serious life-threatening conditions such as colon cancer or early appendicitis.