Need Some Help With Weird "Astral" Happenings, Please?

Ok, here's some background info. Lately, I've been researching astral projection, mostly because of the storyline behind Mastodon's "Crack the Skye" album (paraplegic projects into space, goes too close to the sun, burns his silver cord, can't find his way back to his body). I've seen some forums with posts concerning dangers. A few of them mention demons "doing awful things to my body in bed while I was projecting". This scares me because it reminds me of some weird things happening with dreams years before I knew what projection and lucid dreams were. First, the most frightening, is this: One night, I had this dream where I was just laying in my bed, then suddenly this loud, growling roar came from behind me, only lasting about a second or less. It was exactly as I had always imagined a demon would sound. The dream continued: right after the roar, everything went black, then I reappeared in my basement, but still in bed, and the same roar happened behind me once again. The next weird thing was like a series of dreams. I was asleep, just as normal, but then I heard my alarm go off in the physical world (I knew it wasn't my dream world somehow) but instead of waking up, I felt like I had woken up, but my room was...different. I don't know how to explain what was different about it. I tried to move because I thought my alarm had woken me up, but I felt really drowsy, like I was just on the edge of sleep, and I couldn't move, no matter how hard I tried, and just fell back asleep for only a few seconds, but then it happened again. This time, my room hadn't changed; it was the same as the last time. This time, though, I looked up, and some skinny guy with brown hair and brown eyes was sitting on me partially, with his bottom stopping short of the middle of my torso, and he had roman armor on. He was holding what looked like a hockey stick, and was lightly hitting the bottom of it on the ground in a slow, steady rhythm. I managed to pull the upper part of my torso up by pushing with my arms, though my legs still wouldn't move, and I said "Am I interrupting something here?" He just look down at me, nodded, then said "Yes." Then picked up the hockey stick, and I fell back asleep with the feeling that he was going to kill me with it. This happened a few more times, but without the guy, just my weird room and not being able to move. Eventually, I was able to wake up and go to school. Do you think that the roar in my first dream was a demon trying to harm me? And what do you think the guy in my second dream was, and what do you think he was doing? Please, serious answers only, no "Lay off the drugs" stuff because trust me, I'm clean.