Are you having any other associated symptoms of pain, bleeding, itching, mucoid discharge, etc?
This could be an anal skin tag secondary to anal fissures, hemorrhoids
, warts due to human papillloma virus, moles, or in rare cases due to rectal cancer.
'An anal fissure is an unnatural crack or tear in the anus skin. As a fissure, these tiny tears may show as bright red rectal bleeding and cause severe periodic pain after defecation.'