Vaginal Birth After Cesarean Delivery: Vaginal birth after cesarean delivery (VBAC) is when a woman has had a cesarean delivery (C-section) before, and she delivers the next baby vaginally. If a woman and her doctor decide a VBAC is an option, she will have a "trial of labor," with the goal of vaginal childbirth. Despite the trial, many women still need another C-section.