memories and regression

I stopped using DS for nearly 3 years, I got put onLexapro, moved out of the abusive environment I lived in, and made a life for myself away from depression. Most recently however my past has come back to haunt me, memories of things I had blocked out or thought I had forgotten.I'm taking it out with my therapist, my case worker, and my partner but miss than anything I'm starting to regress, and that scares me. My manic panic attacks are back, the feeling triggered, the need to do something bad. Mysleephas gotten weird too, like it used to be. I hate this, and I'm scared.