You searched for: “rectophobia
proctophobia, rectophobia (s) (noun) (no plural)
An abnormal dread of the rectum or of a rectum disease: Jason went to his family doctor because he thought he was experiencing pain in the terminal area of his large intestine, and was frightened of having incurred an illness, but his doctor calmed him by saying that he only had proctophobia, or rectophobia, and did not any health problem at all!