HELP!!!! My dog is won't sleep on her bed and she won't stop sleeping at

[ggobssesed]

the corners of the wall in my room!!? My dog has been sleeping in her bed ever since I got her which was like 9 months ago. But suddenly tonight she went to the corner of the room to sleep and that corner is like a dark corner. At first she was sleeping in her bed when I was sleeping in mine, the lights were off. But then I got up to do some work. And my desk is right next to her bed and I turned on the table light which is quite bright. Then she went to the back of my room at the corner and slept there. This is the first time she's ever done that. So I was thinking maybe she thinks it's too bright in her bed so she wants to sleep at a darker place. So I turned on the lights at the corner she was sleeping at then I put her back in her bed. She refuse to sleep in her bed and this time instead she went to sleep right in front of the room door leaning against it. I carried her back to her bed a thousand times but she just won't stay. I cleared all her toys out of her bed and tidy it up but still doesn't work. Is it normal that she is sleeping at the corner like suddenly? I'm worried. Please help me out. Thanks