 Those who experience subsequent miscarriages have an increased risk of PTSD compared to those experiencing only one.PTSD can also occur after childbirth and the risk increases if a woman has experienced trauma prior to the pregnancy.Prevalence of PTSD following normal childbirth (that is, excluding stillbirth or major complications) is estimated to be between 2.8 and 5.6% at 6 weeks postpartum, with rates dropping to 1.5% at 6 months postpartum.