What is the reason for the leakage of stool from the vagina every two to three days? Strictly speaking, “congenital pediatric rectovaginal fistula” is not an accurate name for a fecal leak that is usually located in the vestibule behind the vagina. From the child’s symptoms, your child may have two conditions: 1. The anus is normal and the rectovaginal fistula is caused by an infection. In this case, after controlling the infection, surgery is best after 2-3 years of age; 2. No normal anus after birth and the rectovestibular fistula is a congenital condition. This condition is best treated surgically at about half a year of age.