Vanishing suddenly

It started with a false awaking. I opened my eyes and it seemed to be around 6am judging from the light coming in through the window and how it is when I wake up. Then out of nowhere a man walks in it. He had a light brown trench coat and that hat you usually see when people where trench coats in spy movies. I could not see his face as it was just a hazy black entity. At this point I still thought it was real life and someone just broke in. He had a combat knife in his hand and was made his way towards me. I do not know why, but I just did not feel like moving at all since I felt tired as anyone does when they wake up. Then he took the knife and stab the end of my leg near the foot (i do not know why but it felt like it was just testing something.) and all i felt was pressure. That is when I knew it was dreaming and it became lucid. In my head I was like (oh this mother f* is in for a world of hurt.) That is when it went crazy and it took the form of a beast. It was had no trench coat on or anything anymore and it was just a black hazy entity with one red glowing eye. It stared at me and my head felt like it was going to explode. I never experienced pain in a lucid or any kind of dream before. That it when I started trying to explode it with flames and other things, but it would not give. It had more control and power then I did. That is when the craziest thing happened. I lost all control over my body, but still had the exploding head pain.( which felt like it was going to make me cry.) And i started putting my hands up in the air and swinging side to side in a 180 degree turns. I was hitting my sleeping brother which shares a bed with me. I felt his hair so realistically. He did not move or anything. Then shortly after, while still doing the waving thing, I started spouting these random lines, but the only thing I could interpret was "God." Then a pure white dyed light shined in from above and started to burn the demon looking thing. It then started screeching extremely loud. It soon vanished and I got control over my body again. After a minute the dream changed into me teaching my little cousin how to swim in my newly opened pool.(After I woke up I had the biggest headache of my life for like 2hours.) *The thing that freaked me out and makes me feel worry* 1.) that I felt pain in the dream and even after I woke up. 2.) The red eye is the same one I get when I get power hungry in a lucid dream and go crazy with power killing all the DCs. 3.) After I lost control that weird chanting and the white light.(I am not super religious, but I am Christian.) Can anyone explain this to me. FYI, I am 16 and I been having lucid dreams since I was 5.