I'm hurting...and headed for an episode

Hi all, its been a long time since we last chat...
I'm back in school again. Taking an advanced writing class and a humanities class.
Last week my writing instructor asked us to write a narrative about ourselves and that's when it started. I cried in class. All I could think about was a nightmare I had when I was 11. One that really happened. My fathers friend came into my bedroom and tried to molest me. When he walked out of my room I got up jumped out the window and ran several blocks away when I saw his car speed by and slam on the brakes and chased me down the road until I lost him by ducking into some bushes. I then went home and grabbed a knife and waited until the sun came up and was sure he wouldn't come back. At least not that day.
So here I am...PTSD in full blown action.
I even went so far as to write it all down for my essay and about to turn it in.
My meds aren't suppressing anything and I know I'm slipping into depression. I don't have many highs, normally just rapid cycling somewhere between low and lower. I'm caught up in this nothingness. Where do I go from here?