A case of postpartum hemorrhage (PPH) faced by obstetric team according to international guidelines is reported. The maternal bleeding was caused by uterine atony and cervical laceration after a vaginal delivery. Uterine atony was managed by uterotonics and Bakri balloon along early skin to skin and breastfeeding. Cervical tear was sutured accordingly. The balloon was pushed out by strong uterine contractions causing mechanical dehiscence of the cervical suture and a new hemorrhage occurred. A new cervical suture was needed to stop the bleeding. Uterine tamponade with balloon is an effective tool to face uterine atony, but special care should be used if a deep cervical laceration is associated. The balloon can be pushed out by uterine contractions causing a new bleeding due to the mechanical dehiscence of the cervical suture.