((((Silversparrow)))))
What you have, i have been told by my doc is called hyper-vigilance and a normal symptom of ptsd.
It will get better with time and healing but, hard as it us, you need to know it will take time and work.
I'm truly sorry you're having all these flashbacks and dreams as well as hyper-vigilance in your everyday life too...please feel free to pm me if you ever need to talk as i'm in the same boat and would love to help and support you if i can.