I've had blood in my stool for a week straight after a night of drinking jameson straight. I had more than usual; 1/2 a handle in 3 to 4 hours with no drunkeness or hangover. I havent drank at all since but continue to have loose stools but not diareah nor dark stools. The water does not turn red but I can see darkish red in the stool. almost like stewd tomatoish. I am 50.