As grim as it sounds, is black sick and black poo something to be worried about? was out drinking last night do is that the cause?

GI bleed: If you mean that you are having black in vomit and stool then it could be serious. This is most likely due to bleeding in your gastrointestinal (GI) tract, most likely your stomach. This can be very serious and even life threatening. GI bleeding is often related to drinking alcohol. You should see a doctor, especially if this occurs repeatedly or if you feel light headed.