I woke up to a woman sitting on my bed

I'm a 33 year old woman. I live alone in a two story house with no basement. My bedroom is on the first floor and I have a large window with no blinds or curtains (so I can fall asleep looking at the stars).<br><br>One night, I fell asleep in my pajamas, very early, at around 2am, which is early for me. I usually get tired around 4-5am.<br><br>I remember at around 8am I woke up to a sharp, stabbing pain in my head. I looked over at my phone and noticed it was 8am, which was weird because I never wake up before noon. I was confused, but when I looked up to shrug the weird feeling off, I noticed a woman sitting on my bed. She was lying on her tummy, her head inches away from mine, staring at me with tears in her eyes.<br><br>She had short, dark hair, very red lips, and a green button-down sweater and blue jeans. There was something wrong with her expression. It was twisted, and her eyes were huge with tears.<br><br>I started screaming and throwing my arms at her. She didn't move, didn't flinch, just kept staring at me. I stood up, kept screaming, and ran to the bathroom and locked the door. I heard her running out of the house. A few hours after that, I called 911 out of fear and told them my story. I also called my mom. When the police came and searched my house, there was no one. They looked out my window, onto the street, took some pictures, and gave me 2 weeks of police surveillance.<br><br>I never saw the woman again. I moved out of that house 4 years ago. I still can't stop thinking of her.