This chapter provides an understanding of the ways that past trauma can affect women in pregnancy and postnatally. It provides guidance on how to recognise and understand the symptoms of post traumatic stress and information on why a traumatic event can continue to affect a person deeply, even if it was a long time ago, other circumstances have moved on or it is not considered ‘traumatic’ by others. The focus is on maternity and birth-related traumas, although the principles apply to other types of trauma. Evidence-based techniques will help you understand and work through your reactions to trauma and will help you put intrusive memories into the past so that you can untangle the past and present. This chapter covers working with self-blame and tackling other consequences of trauma such as feelings of disconnection as well as practical tips on talking to loved ones and professionals in order to get the right support at this time.