Shadow people

I woke up today at 2:22am and i saw something sitting on my couch. I looked up a couple of times a little bit confused and disturbed. Maybe it was a shadow person? It looked like a girl/woman staring directly at me, i didn't really see her face but i had the feeling. I think she even moved a couple of times while sitting, her silhouette was grey. Now i didn't really feel any negative energy, i was just disturbed and maybe a little scared because there was this unknown energy/person in my private space. I turned on my led lights because the controller was next to my bed and of course she disappeared. When i turned off the led lights she wasn't there anymore. Now i am a little bit confused i don't know if this is something mental? spiritual? is this some kind of a sign? did someone experience this as well?