Irritability and Nightmares

I've been having nightmares for the last two days. I don't know what triggered them but it could have been anything. They come and go every so often. They used to be very frequent but now since I've started my medication they have been less and less. However, I am trying to figure out what triggers them. Sometimes the nightmares are from my past and I wake up very irritated and angry. Sometimes the nightmares are about things that have never happend and I wake up with relief.  Praying before sleep has helped a whole lot being that the nightmares used to be so intense I would be afraid to sleep at night. But with the medication and praying, my nightmares have slacked up a lot.
  I think my anger is what is causing the nightmares I am having of  my past and of certain family members. There is so much I want to say to those who have hurt me but I just don't know how to say it in love. I know I must be the bigger person and not scream or go into a rage. I mean what good what that do? In a perfect world the people who hurt and abuse us would be held responsible for helping us get over the PTSD and pain. But this is not a perfect world so we must push ourself to wellness as well as happiness. Whenever I have a flashback or a nightmare I put myself in a happy place. Imagine myself by the beach, in a park on a warm day, or just pray and meditate. I have also decided to keep a private journal to share with my therapist whenever I have a flashback or a nightmare. But other than this, I am doing pretty much ok. Love ya!