Nightmare With A Ghost Child

Last night I had a nightmare.

I was in my living room, and my kids were playing around the house, but suddenly saw another kid (a boy) slightly older than mine, playing with them. I was quite surprise because I thought "where did that kid come from, I don't know who he is".

Then I looked and saw one of my kids on the couch, and the kid still playing with the other one, running after him.

He had straight blonde hair, about 9 y.o., but I sensed evil in him, posing as a threat to my kids.

So I got up and chased him to my room, where he vanished. And I couldn't seen my kids either.

I listened to myself screaming madly "Get out of here! Get out! Get out", and heard glasses crashing on my kitchen.

I woke up immediately, trembling, still hearing myself screaming and had the strange feeling I had something on my neck, like a rope, strangling me.

That feeling subsisted for about ten minutes, like someone was trying to choke me but had not enough strength to do it.

About five minutes after this, my neighbor's child (still a toddler) began crying and screaming, and I thought it was not a coincidence (can't explain why I had this for certain).

I couldn't sleep all night, as I kept having the feeling something or someone was present, and I was really scared about it.

When I finally fell asleep, I woke up again, with the same feeling something or someone was present.

So I gave up sleeping.

Usually I wake up every other night at about the same time, but never had this feeling before.

I'm not sure what happened.