Coast to Coast on the Slender Man and Hypnagogia

Agh, I'm so tired. Last night I went to sleep at about ten, with my cat, and everything seemed pretty normal. So then about half an hour later when I'm falling asleep, I hear this meowing sound coming from the other side of the room. I look around, and my cat is asleep next to me, and our other cat is not in my room. So, I just kind of shrugged and went back to sleep, because I probably dreamt it, and if not, I'm okay with having a little cat ghost hang out with me.
     So I fall asleep for a little bit, I think, and then all of a sudden I feel like I'm awake, and I stare at the ceiling half-asleep, and I think I see some kind of red mist swirling around on the ceiling. I didn't really get a negative impression from it at the time, but I didn't feel like going back to sleep with that so I went to sleep in my mother's room...because I'm terrified of demons like that, ha ha.
     While I'm awake at this godforsaken hour, I might as well write about my other experiences with misty apparitions. Okay. A while back, maybe a few months ago, when I had first left the hospital after being deathly ill after eating a poisonous flower, I was feeling better a bit and went to bed early one night. That night before I fell asleep I saw this red mist on my ceiling, thought nothing much of it for some reason, and went to sleep right away. That night I dreamt ordinary dreams, like I was sitting talking to my friend Alex, but then all of a sudden the dream just...changed, like it felt just wrong and different. All the colour drained out of the image in my dream and where she had been laughing, her mouth stretched unnaturally wide and it looked like very sharp animal-like teeth. And it felt like it wasn't her anymore. Then in my dream I saw a red key of Solomon, and I was like, no, just no, that's not staying here for long. So then I woke up, and in the dark next to my pillow was a sheave of dead lavender flowers. At which point I got annoyed and started yelling at whatever it was, but when I turned on the light, they were gone. Nightmare, or paranormal activity?