I suggest that you ask for an endoscopy to uncover reasons for the "coffee
-beans" content of your stomach
liquids - this suggests bleeding within the stomach
At the same time why not undergo a colonoscopy to check out the rectal bleeding - unless of course your doctor can be absolutely certain that the cause is minor such as haemorrohids or anal fissure. Don't be satisfied with a statement such as "...well it looks as if it might be ---anal fissure/haemorrhoids....