well the oddest thing happened , and im gonna try to explain it (hope you understand )

I watched that documentary from youtube that you posted and it made me curious .. I googled about lucid dreaming on google , I also asked around on chat but I did not find anything good on google nor on chat ..so at 3am I played that youtube video you posted and I went to sleep . Nothing weird so far right ?
Now its 5:06 i woke up at 5am sharp and I would lie to say im not a little curious /scared to what I just went through ;D
I dont know when I started dreaming so ..
While I had my eyes closed and listening to the youtube video , I noticed that It ended a lil bit sooner * the time went to fast * but I thought that its just my imagination so I left the computer go into hibernation and continued to sleep ..so here it starts .. around 20 min ago I felt awake .. the monitor was on ..and I heard steps getting in my room , the ""thing "" proceeded and shut down my monitor and I thought that its my mom , sometimes she comes to shut down the computer and wake me up and while the thing was doing this I thought if I should keep my eyes closed or open them .. so I opened them and I saw in the monitor my reflection and then I thought if the thing (which at that point I still though its my monitor saw that I am faking my sleep ) .
So I was sleeping on my face ...and then I felt someone leaning on me , same position that I was trying to sleep on . At that moment I could not move anymore , and I instantly thought about the video ..I noticed I could not open my mouth also ..so while being in that situation I thought what i should do .. pray to good ? but im not a religious person and that would be an act of a coward , I thought I should scream for my parents but I could not open my mouth like i said ... So what was left for me to do was start moving ..I used as much forced as I could and little by little I started moving my foots and hands , so after a while I managed to free my self (all the time she was on me I felt awake ) so after this happened im posting this right away ... with a crazy backpain like I carried bigfoot on my back .
Your probably wonder how I know she was a girl ? Well for some reason , I felt the hands very good , very tiny but long hands , with a powerful grip ..they crawled all the way from my back to my shoulders and grabbed my hands ... and the breathing ..she / he / it was not talking but i could clearly hear the breath .

So my thoughts to what happened ?
Demons ? I dont think so .
A dream ? Yes ,I think it was a kind of lucid dreaming (in my search for one , I actually achieved it ) What I know right now for sure its that my back is killing me and That i am a little afraid to go back to sleep .
Most probably was a deep dream , a sum of my resident evil movies that I watched before finding your thread , and the last thing I think i heard before the video ended abruptly was about a woman talking about a woman on her ) , thebackpain is not weird , i probably in my sleep stretched or something is happening often ..whats weird is how real it felt