I know exactly what you are going through. Due to the abuse I was exposed to for the 15 months of my life starting at the age of 13 when my situation happened I get frequent flashbacks to those situations of abuse and harm towards me . I cannot say that it happens everyday, but it happens frequently still and like you said there seems to be nothing that can get you out of those thoughts when you are in the moment. My parents need to get me into a safe space when this occurs or I can cause even more harm to myself because I can get very distraught and so caught up in the thoughts it disturbs me. If it is not for my parents keeping me safe it would not be good.