hi! im new here 
I experience sleep paralysis
often. But mine is I don’t see scary demons and
those kinda of things, I can only see my room
and the things that are exactly on the same spot.
Sometimes I experience vibrations during
my sleep paralysis and I try to wake my self when I
start to experience the vibration. It’s like your body
is going to tear apart. what is it that I am experiencing?
Is it lucid dreaming? please answer
Hi, and welcome to LD4all! 
That is usually what sleep paralysis is for me, too. It simply means that we are half asleep. Many people say that it is easy to enter a lucid dream from this state of sleep paralysis. The vibration is a common hallucination while falling asleep, probably even more common than seeing people or hearing sounds.
Lucid dreaming is simply knowing that it is a dream. Sleep paralysis like this can be turned into a proper lucid dream through the WILD technique, where you stay conscious through the process of falling asleep.
I experience the vibrations too, like Siiw says they are a sensory hallucination (somatosensory?) although others would tell you it’s your astral body and you should use it to AP. It does somewhat seem like a secondary energy body overlaying your physical body but I digress. I quite enjoy the sensation and every time I SP now I am never afraid, I actually get excited because it means I can use it to enter a LD.
Yeah, agree with both Siiw and Aeon…the body vibrations, sometimes very intense and sometimes more subtle, are a common phenomenon associated with SP. And, as Aeon suggests, for me they are a very welcome phenomenon (as is SP) because I know that, when I experience them, I’m very close to a WILD . I become inwardly happy/excited when I experience them…though try to remain calm and impassive so as not to “scare” the phenomenon away. See? Now I’m more worried about scaring it, than about it scaring me LOL