An intrauterine device string is provided. The intrauterine device string has an elongated member with an upper portion, an intermediate portion, and a lower portion. The upper portion is configured to attach the elongated member to an intrauterine device. The intermediate portion is configured to extend through the endocervical canal of a female. The lower portion has a first curved portion configured to follow a contour of the external orifice of the cervix of a female. A second curved portion at an end of the lower portion has a memory-retaining material to prevent the second curved portion from passing through the external orifice of the cervix and to constrain the second curved portion to follow the contour of the outer portion of the cervix. The intermediate portion is configured to pass through a plane defined by three points on said second curved portion when in use.