Uterine rupture is when the muscular wall of the uterus tears during pregnancy or childbirth. Symptoms while classically including increased pain, vaginal bleeding, or a change in contractions are not always present. Disability or death of the mother or baby may result. The most serious risk of a VBAC is uterine rupture, which can be just as bad as it sounds, but is also very rare. ... “The blood supply to the uterus is 600 cc's per minute. If compromised, you could essentially lose all your blood in 10 minutes,” he explains. A uterine rupture could kill you.