The pelvic organs are kept in place by healthy pelvic floor muscles and the strong walls of the vagina.
Giving birth vaginally puts pressure on the pelvic floor muscles, which can cause them to stretch, weaken and become loose. As a result, these muscles aren’t strong enough to hold the pelvic organs up as they had done pre-pregnancy, causing a prolapse to occur.
Although more common with vaginal birth, women who have a caesarean delivery can also experience postpartum prolapse due to the weight of the baby pushing down and stretching the pelvic floor muscles during pregnancy.
Pregnancy hormones also play a role in postpartum prolapse as they reduce the elasticity of the pelvic floor muscles. Postpartum prolapse is also more likely if you had to push for a long time, give birth to a large baby, you’ve had multiple pregnancies or births, or if forceps or vacuum are used to aid delivery.
Other factors, such as obesity, having a chronic cough and regular heavy lifting may also play a role.