Background. Sexual assault is a prevalent crime against women with known negative effects on health. Recent media attention has identified that many sexual assault reports are not believed by police, and therefore coded as “unfounded”. This is consistent with public discourse of inaccurate rape myths that indicate that some women lie about sexual assault. Whereas he actual rate of false reporting is low. Negative reporting experiences of sexual assault have been associated with re-victimization and trauma among survivors. However, little is known about the impact that being sexually assaulted and not believed by police has on a survivor’s health and well-being. Thus, the purpose of this qualitative study was to explore women’s experiences of not being believed by police after sexual assault and their perceived impact on health. Results. Thematic analysis revealed three salient themes: 1) Broken Expectations, 2) Loss of Self, and 3) Cumulative Effect. Within the theme of Broken Expectations, two subthemes emerged including Loss of Trust and Re-victimization.Conclusion. The findings highlighted that not being believed by police resulted in additional mental and social burdens beyond that of the sexual assault. Many survivors felt re-victimized at a time when they needed support, leading to maladaptive coping mechanisms. Having a better understanding of the negative health impacts is important for police, health, and social service providers who may be able to positively influence reporting experience and overall health effects.