When the intestine bulges into the upper vagina, it forms an enterocele. In order to diagnose an enterocele, a doctor may have to place a finger in the vagina and a finger in the rectum while you are standing. Warren M. Overbey M.D. When the rectum bulges into or out of the vagina, it is called a rectocele. It is caused by a weakness of the back wall of the vagina. A large rectocele may make it very hard to have a bowel movement, especially if you have constipation.
Some women have to push the bulge back into the vagina in order to complete a bowel movement.
When the uterus drops down into the vagina, it is called uterine prolapse. The distance the uterus drops may vary. Mild degrees of prolapse are common. It often does not cause symptoms and does not need surgery.