Have had long white mucus things in stool that look like long worms. didn't move. have had pillows in rectum can this be part of them sloughing off?

Pillows in rectum?: Mucus discharge occurs in up to 50% of patients with irritable bowel syndrome, with or without pain. Mucus may also be produced in response to partial obstruction, chronic constipation, rectal dysfunction, infection, & even from secretory villous tumors of the rectum. At the very least stool studies & probably a sigmoidoscopy should be considered, particularly if concerned about "worms" or at risk.