do you have insomnia?

if you went thru domestic violence as a kid (with death threats), do you still have problems sleeping alone? til this day, if im not on strong meds, i won't sleep alone until its like 5-7am. i used to play games and be up late because i was afraid mom and others would get killed and i wouldnt be able to help if i was asleep. now, it's really hard to sleep and i'm already 22. i can sleep with my girlfriend, tho, my brain feels safe, but even with her i have nightmares and keep waking up every night.