The astral plane is way to physically impressed to be a good spirit impress.  Reach higher - you will be rewarded for the efforts.

Sleep paralysis is normal. It happens to everyone, every night. Otherwise we would all be up and about physically acting out our dreams. What is happening to you is that part of your brain is waking up while the body's chemicals for paralysis are still active. There is an interruption in your sleep cycle. It is -very- scary if you do not know what's going on. I would suggest you practice good sleep hygeine! regualar bed time, not doing anything in bed besides sleeping, no heavy meals, sugar, caffeine, ect... Also, I would suggest you look to your diet to make sure you are getting proper nutrition and hydration.
When and if it does happen again, remind yourself that it's no big deal, no need for fear. You can do that because you are awake enough to know you can't move. You might wish to relax with your favorite meditation place. You will either go back to sleep or fully awaken. Understanding banishes fear!

I lived this experience a few months ago, I am sleeped in a place called "Wine fall", when i was meditated, i saw a weird spirit; the earth haved a quake and all the birds there escaped.

After that, i´m in my campament, i woke up, but i´m cannot move my body and a horse attacked my campament.

Scared...

Did you notice the electrical power energy was more of a silent loud event than
the way it would be without proper network to your home .. and was the newer
neighborhood including dark houses.. and did you not talk about dream and the
herbs you tried or smoked .,. and if you want better aligned sleep layer of thot,
did you try not including the collection of stones or magic item you forgot about.

Try moving the place of your magic item keeping spirit energy, like an altar. . .      also meditate proper thought.    Evard