Apparently Paranormal Options

Hello Everyone!
Wanted to ask i had an experience/appearance of a paranomal,
It looked like a smokey-cloud with color changes.
Any ideas?

Sorry for the low-quality description,
I saw it at my room, around 4am-5am. The duration is about 10-20minutes, I felt with heavy pulses over my body, especially my heart, I didnt feel scared after i recognized as something in my room,
The size of it, i think it was unstable in size, Because I was laying on my bed with my laptop on my lap, After i shut down my laptop i could see it at the end of my room.
I wanted to make sure i was not hallucinating, I could see it again and changing colors, So i tried to force self to sleep, but it was hard,i was covered with the bed cover and i still could see the smoke and color changing under the cover.
The colors changed from red to blue, and swaping.
It was a first time to see something like that and never saw it after!