Black Shape Hovering Over Me

Last night, in the middle of the night, during one of my deep-sleep cycles, I awoke just enough to see a black shape hovering over my chest. It could have been on my chest, but I say hovering because I felt no sensation of it physically contacting me. It was fairly dark in the room, with some light coming in from the window and my open bedroom door. I was still partially asleep, but I immediately realized this was something that shouldn't be there. It was completely black, and obscuring more than a third (maybe half) of my field of view. It filled the central area of the lower and middle thirds of my field of view. It had a vaguely humanoid shape, like seeing a black misty torso and head.

I was laying on my back, with my arms over my head on my pillow. The instant I saw this shape, I swung my arms out in front of me, to get it away. It vanished as my arms approached it, or as they hit the space where it was, ie within less than a second from the time my eyes opened. My arms didn't contact anything but air. At that exact same moment, the gallon-sized water jug on my desk, with about two cups of water in it, flew/fell off of my desk and landed on the floor with a hollow thump. From my position on the bed, the water jug was initially about four feet from me, a little over a foot out of arm's reach. It landed on the floor just a few inches from the edge of the desk.

I sat up and looked around the room. I saw the water jug on the floor. The cat who was sleeping at my feet on the bed was now running from that spot to the door, in a crouched down position. Still crouched, she turned her head and looked at me just before she reached the doorway. Then she stopped, seeing me sitting up and looking at her. The cat who was sleeping on the desk, about two feet from the water jug, was still in the exact same sleeping position she was in when I went to sleep, except that now her head was raised so she could see what I was doing. Neither of the cats could have possibly reached the water jug's spot on the desk and returned to their current locations in the one to two seconds it took me to sit up and look around. Everything else looked completely normal in the room. I'm pretty confident about dealing with these kinds of things now, so I went back to sleep.

Update:
I just told Becca about this, and she asked if it was around 4am. It was. She said, "Oh, I just got the chills..."We sleep in rooms right next to each other (separate rooms due to very different sleep schedules most of the time), with only a wall between our two beds. At around 4am, she woke up because she heard a sound. It was her phone making a series of tones. She picked it up, and it showed that the battery was dead. She said it's never done that before when not in use (she's had this phone for years, and recharges it regularly). One theory is that entities trying to manifest can drain batteries. Knowing this, she sat up and looked around, and tried to see if she could sense anything unusual. She didn't see or sense anything unusual, so she went back to sleep.

Update:
On the morning of the day after I posted this, I found out that my older brother died of a heart attack just a few hours after I posted this. (I'm not going into how this news affected me and my family here). He had called EMS the night before (the same night I had the experience), complaining of chest pains, and they told him it was just inflamation of the heart muscle, and didn't take him to the hospital. I didn't know about any of that until the morning after I posted this. I don't know what it means, but it seems far too connected to be a coincidence. Perhaps it was an empathic connection with my brother, or a spiritual attempt to communicate with me to let me know something was going on. I know I'm always connected with my brother, as we all are with everyone we love.

Theories:
I considered the possibility that this was some sort of attack, but I really don't want to focus on that. Whatever it was, the experience changed me for the better. I went from being somewhat frightened of these things to feeling very confident about them. From my experiences and what I've heard from others, it seems that we are by far the dominant force. We can easily turn off our ability to perceive these things, or turn on this ability with some effort. We can easily dispel them or send them away. So, if we want to learn from them, we have to relax our defenses, open up and be gentle with these fragile things, but if we just want to have nothing to do with them, that's very easy.