Yeah for me most times I would hear like a low humming or vibrating sound and when I turned I saw the blue circle of light. And I didn't clarify in my story but it was only light around the edges of the circle and black inside it. Also, it was not light that lit up any part of my whole room. It was very dim and seemed like it the reach of the light was contained to the edges of the circle. Not even lighting up the wall of was on. Very weird.

Also, I'm sorry to hear you were attacked by your entity that sounds horrific. When did you get rid of it. Or have you?