I can relate. I had these for a long time as a child up to my teen years when I left the House of Horrors, aka, my parents home.
Turn a light on somewhere in the house. It is the only thing that used to help me. Oh, and also, watch some mindless t.v. until you feel safe enough to go back to sleep. Maybe it will help if you remember you are not alone. Pray if you believe in that, I do. Read something relaxing til you fall asleep again. See your doctor maybe for something to help knock you out so at at least you get a good rest now and then.
Remember in your heart that you aren't alone. Tons of people deal with this.
Love yourself. God bless you. I know how hard it is. Edited to add ... pray even if you don't believe in it, haha!