Inclusion Criteria:  Female 18 years and older Pregnant and between 16-28 weeks gestation Endorse a history of one or more potentially traumatic events meeting Diagnostic and Statistical Manual of Mental Disorders-5 (DSM-5) Criterion A for PTSD (i.e., "exposure to actual or threatened death, serious injury, or sexual violence," American Psychological Association [APA], p. 271) that is interpersonal in nature (e.g., sexual or physical assault, child abuse/maltreatment, witnessing family violence) Endorse a score of 33 or greater on the PTSD Checklist for DSM-5 (PCL-5); Have access to a broadband internet connection Able to read and speak English  Exclusion Criteria:  Pregnant with multiples Have visual, hearing, voice, or motor impairment that would prevent completion of study procedures Have been diagnosed with a major depressive episode, psychotic disorder, bipolar disorder, dissociative disorder, substance use disorder, or other diagnosis for which participation in this trial is either inappropriate or dangerous based on self-report Report currently being in an abusive or unsafe relationship Currently receiving treatment (medication or psychotherapy), or have an intention to resume antidepressant medication after delivery (i.e., women who discontinued their medication during pregnancy)