Is it normal to have demented dreams?

Okay,so ever since i can remember i've been having crazy scary demanded thoughts before bed. Things like my loved ones dying. Like it scares the shit outta me. I get so paranoid like something is going to get me or people are going to sneak in my house and kill my family. I know theses are not healthy thoughts. i believe in jesus and i thought i was saved. I pray every night.They never seem to go away though. Nothing helps the thoughts. Sometimes they get to the point where they are like evil faces our masked men. Just scary things. On a normal night i dont get to sleep until 1 or 2 becasue of them. What can i do to help them go away? Please help!! I don't know what to do i'm dont wanna be parnoid anymore:(