Hello DG.
I am very sorry that you are having flashbacks at this time. I feel that you just need to tell your therapist that you are having flashbacks about what happened, and not go into more detail until you are comfortable telling your therapist what happened. The therapist can still help you without all the details of the flashbacks to help you deal with the flashbacks in a more positive manner. When you are ready to tell the therapist what happened is the time to tell the therapist what happened not before, or feeling threatened to tell the therapist any more than you can handle at this time. I hope things get better soon. Take care Soidhonia