This happened to me 2 years ago. So it was 2 AM and I was studying for my math test and then I thought "screw it. I'm gonna fail anyways. Might as well go to sleep," so I went to sleep. Then I woke up at 5 AM because the lights in my room turned on. I covered my eyes with my left arm because I thought it was my mom checking up on me if I was sleeping or not. Then I got mad because the lights didn't turn off so I moved my arm and looked at my door and window (my mom really likes to look out my room's window) and nobody was there. Then I felt almost like this biting on my right arm and I thought it was my sister (I share a room with her). I waited for her to cut it out but the biting didn't stop. I looked over to my right and nobody was there and my sister was sound a sleep. I pulled my arm away and yelled "WHAT THE HELL?!" really loudly and that's when my lights turned off again. I pulled my covers over my head and I couldn't fall back asleep. My alarm rang at 6 AM and I was still awake. I asked everybody in my family if they came into my room and turned on the light and everybody said no (I still have no idea what that was). But then again I live SUPER close to a graveyard (you can see it clearly from my mom's room. It's like a 20 second walk to the graveyard max). But weird things always happen in my house. Like you would hear somebody running up the stairs when nobody is there and you can hear like spoons or something dropping in the kitchen when nobody is there either (and there would be nothing on the ground).