Dave, Back in the day, somewhat like you described, I had dreams which terrified me to the point of insomnia. A friend gave me a copy of Carlos Castaneda's "The Art of Dreaming". The book helped me realize that I wasn't having nightmares at all. I was Lucid Dreaming. It helped me learn how to guide the course and outcome of the dreams. Nowadays, I quite enjoy Lucid Dreams when they happen. Wether my story helps or not in your case, I wish you good luck catching some quality ZZZZ soon!