PTSD dream (or being haunted by the past)

I had an awful dream last night. I dreamt I woke up in the psych ward with no memory of how I got there. I also remembered that I had an awful dream in the dream where I saw my mom die again or something like that so I was really distressed in my dream. Yeah, that sounds confusing but I hope that's clear enough. Anyway, I started talking to some of the people in the ward and it became clear that I really didn't feel well. A doctor said he was tired and didn't want to deal with me so they injected me with a tranquillizer. But it wasn't working. I was sitting on the floor and rocking back and forth and just feeling awful. I don't know how to describe it. I guess it's kinda like all emotions at maximum exploding inside and all you can do is feel highly anxious from all the energy that can't get out except in rocking and generally behaving crazy. It's one of the worst feelings I have ever had. I've had it in real life and it's just as bad in dream life too. I can't remember the details exactly of what happened next but I know it was not pleasant. I woke up feeling like I was actually hospitalized. I hate that feeling. I guess I've had so many traumatic experiences that they pop up every once in a while in my dreams and haunt me in my present. Does that mean I still haven't processed it all? Especially my experiences in the psych ward? I wish I could be completely free from the past already. But then I guess that would mean I don't have PTSD any more. I think I should read up on how PTSD is generally treated. It seems to be bothering me more than my other mental illnesses...