Demon Creature in my Room ??

A year ago; I was in bed in the middle of the night, I was staring at the ceiling, and I felt a presence, and saw a creature that looks like venom(spiderman) or grey, coming from the center of an projected seal in the ceiling (like a solomon seal) with strange Symbols. The 'thing' took my by my shoulders, after that, I cannot remember anything.

That was a frightening experience, that was the beginning of a set of very rare experiences, for example, another night, I wake up and see that my arms were glowing, with the colours of the rainbow, I'm sure that was not a dream, that was real, after 2 or 4 minutes I see a white light coming from the back wall and I cannot remember what happen after that.

Pd. I never use drugs or alcohol :/