If it has progressivly worsened then, it means that there is a bleed in the upper esophageal passage or stomach. This is a problem and should go to a doctor. If it happened just once and it was very trace then it could be swallowing blood from a nosebleed.
To vomit blood.
melanemesis: Black vomit caused by the mixing of blood with intestinal contents.
to vomit as in hematemesis, to vomit blood.
yes
can Asthma make you vomit blood
Depends where you're bringing up blood from... If you mean "get a headache, then vomit blood", it means you should really see a doctor. Likewise if you're coughing blood, rather than vomiting it.
Yes it does
excess sodomy
Yes, if enough blood is bleeding into your stomach or digestive system, and often it does not cause you to vomit until there is a large amount of blood loss. Any time you vomit blood, you should seek immediate medical care.
Raid of the Vomit-Blood Fiends - 2012 was released on: USA: October 2012
brown vomit means that you either ate something brown, or that there is some blood going into your stomach (from an ulcer most likely) that is coagulating slightly before being vomited.
yes it can.