I just threw up a little blood. i'm bulimic. what's happening and what should i do? i don't think it's an emergency.

Serious illness: Blood is always a serious symptom of something very wrong. Bulimia is such a difficult problem to face on your own. You need help to overcome this very challenging condition. Seek help and go to a local clinic and ask for ways to overcome this challenge.

Bleeding, bulimia: I think it is serious enough. Bleeding is a bad sign, since none knows when or if it will re-start or stop, and can be a sign of severe lesion (esophageal, or else). It deserves immediate attention, and proper treatment in short and long term. Get better. Seek help.