nightmare

"Each time we face our fear, we gain strength, courage, and confidence in the doing."
Anonymous

I was at my school, and I was carrying my baby cousin. She was having a fit and completely freaking out, so I put her in her stroller.
Time skip.
I was in a hallway at the school, and my mother was there. She told me to go outside to the car to assist my father with carrying some things. I had my sweater on, so I knew I'd be warm enough. I walked over to the doors and was about to go outside to the parking lot, when I realized that I didn't have my shoes. I went back to where my mother was to get them, but she began to scold me for not helping, claiming that everything had been brought inside already. I angrily put on my shoes and went outside. I jumped on the ground and slid on the ice on my belly. It was jolly good fun, but I stopped because I didn't want to dirty my sweater.
I walked over to the car where my father was working on his computer. I began talking to him though the window.
"Can I help carry anything?" I asked. I noticed some gross-looking bugs on the outside of the car.
"Everything has been brought in except a couple things that Ill get."
"I'll carry them."
"Why?"
"Well, because I didn't help out earlier and I desired to make reparations for my lack of assistance, and THAT BUG IS CREEPING ME OUT!"
On the car was an ant and a "tomato spider," as I called it (see image below). They both had a bunch of little white grub-like things attached to them, parasites I expected. The ant was big, but worse was the tomato spider. It had a gross red body and long legs, and a fuzzy tail. It fell off the car and I jumped back. I began to stomp on it, but every time I tried to kill it, it didn't die. I stomped again and again, but it still lived.
I went into panic mode. I was freaking out. I hate bugs, and they are one of my biggest fears. I began to flail, and I almost hit a nice young lady in my panic. My father kept telling me to calm down, but I just couldn't. Now while that damn spider still lived. I stomped again, and again, and again. Finally, I threw a napkin on it and stomped again. Finally, I woke up.
This one scared the feces out of me. I am so afraid of bugs, for no reason. I think this one counted as more of a nightmare than the last one, because while roaches are just gross, big red spiders are frightening.

This thing is awful. Actual size.

"Most glorious Prince of the Heavenly Armies,
Saint Michael the Archangel,
defend us in 'our battle against principalities and powers,
against the rulers of this world of darkness,
against the spirits of wickedness in the high places' [Ephesians 6:12]"
~ Catholic exorcism

I was in a dark, Hogwarts-like place. The surroundings were old and wooden, but sturdy-looking. There was a giant crowd of people around. I was on a second-floor platform, but you could look over the railing to see the first floor if you wanted. I looking for my friends, Caitlin (my pseudo-sister IRL) and Ken (a somewhat large lesbian, and one of my best friends IRL). I saw Caitlin and Ken run by me up the stairs, so I immediately turned around. I caught up to Ken, but Caitlin had gotten away. Ken informed me that Cait was possessed by The Demon.
In its natural form, The Demon looked like a small black cloud, but it could possess people and have them do its bidding. Ken and I had to get it out of Caitlin, so we were going to have to perform an exorcism.
I got Ken and we went to the dorm area of the hall. Some girl, with slight reluctance, let us set up a base in her room. It was a small, but cozy room with pale yellow walls. Once inside, we shut the door, lit a candle near the door and one near the bed, and I sprinkled a circle of Holy Water from the container that I had with me.

Layout of the room:
[].....~~...[.]
[]..~......~[.]
|......~~...[.]
|____'_'___|
The []'s make up a bed.
The ~ represent a circle of Holy Water.
The [.]'s are a desk with a TV on it and some papers that were on the ground.

There, we waited. I got prepared to say some exorcism. Suddenly, we heard a knock on the door. Ken went over to open it, but I stopped her.
"Who is it?" I asked.
No answer.
"Who are you?"
No answer.
"Should I turn out the lights?" Ken asked, about to suffocate the candles with her fingers. I nodded. The room got dark, and I kept the door locked. The Demon wouldn't be getting into this room.
I woke up.

This dream was quite frightening, but I don't know if it really was a nightmare. It had many nightmare qualities, like an unseen enemy, my friends are victims, and I'm not completely sure what to do, but during the dream, I was acting very calm, cool, and collected, although I really was quite nervous. I knew the precautions I had to take to stay safe. I'll just put it as a nightmare.
I should have noticed it was a dream because I don't believe in demons. I think crowds may be a growing dreamsign for me.