Sorry you are having this I hope you can soon feel at ease again and get a good nights sleep. Not sure if this might help but you know how people say things can trigger you but you don't know your reacting to them at that time, well not always at least I don't at that present time know that I am reacting to a trigger. My point is sometimes even now, althought it's dark you can still make at objects and things in the room when I was a kid I would see a witch, hippo ect and sometimes a figure outline of a person. However all it was was clothes or the line up of things in my room that when in the dark I could form and see what I thought above. Now even though I know the coats hanged on my bedroom door are not a figure of a person lurking over me if I haven't been myself latley then I think it really is what I imagen and sleep with covers over my head waiting for that person to pull them back the covers shaking althought it never happens of course. Fear is a strong thing and can take over our logic. Maybe try cuddling a soft toy when in bed while trying to sleep just a thought. Sorry I couldn't be of any more help.