Why am i had a mucus discharge coming from my anus?

Anal leakage: Processes that interrupt the integrity of the sphincter muscle or the hemorrhoid columns can produce anal leakage. For example, stretching of the sphincter muscle, a flareup of hemorrhoids, mucosal prolapse, or an abnormal connection called a fistula can all produce what would be termed anal leakage. Mucus is normally produced by the lining and increase production can be affected by medications or underlying disease processes. I suggest you see a surgeon for a anorectal examination.