Dear Stephanie , I am a Newbie so please bear with me.
I live in a country that was ravaged by civil war for decades. At that time I was a good little JW. Despite this I saw many war atrocities. Its 10 yrs now that the war is over and nearly 10 yrs now that I left the WT (the two events had nothing to do with the other though). I too was plagued for years with "night terrors" feelings of insecurity and fear of bodily harm, after all you never really forget a scene where a violent act has taken place. Not that this was related to the JW's because my outlook was that Armaggedon was there to save me from this hell on earth, but rather from the horror's I had seen.
I often think i'm a tough old SOB / nut to crack but I found that the only thing that worked for me was finding pleasant things to occupy my time with. The first thing I did was get a college Degree. This I did at night school...no more meetings or time sitting infront of the TV ! The second thing I did was get some pets. I have several cats and any cat lover will tell you that a cat doesn't take any nonsense. Thet are Great to show on weekends at Cat shows, YOU ALSO MEET A LOT OF COOL PEOPLE...hey presto no time for FS. Lastly I became an IT "amateur" hobbyist. Great for those nights when you cant sleep.
What I'm trying to say is that when I had lots of idle time for idle thoughts its easy to go to that dark place. Those memories that you want to forget surface even easier.Find ways to enrich your life. Especially things you can do with your kids. I know that Armaggedon mental imagery can be frightning, but If you think of all the "hellfire" paintings churches have used for centuries, isn't it time to say NO MORE ! I know you'll feel better if you can get rid of the baggage and get some happy things to focus on.
PS I noticed certain medications I was using at one time had nightmares as a side effect. Well worth exploring with your GP. Good luck.