What are cloud dreams about?

We were at school and the teacher made us go outside to watch what was happening. I saw a video on my phone of a plane flying into the tower, and it was a different view from any I have seen of the real tragedy.
Everyone could hear this low rumble and we watched a huge cloud of rubble and smoke explode out in a circle, even though we were very many miles away from the actual place. And after that, there was a huge explosion that almost look nuclear even though I know that’s not how it would look in real life.
I also looked at the date and saw that it was August 16th so I hope I’m not a psychic or anything. This all felt very real and I only realized it wasn’t after I had woken up.

I was going to school it was the last day of school and I was talking to my mom about how it was going to be a good summer vacation and I got to school and started the day off as normal put my stuff in my locker and went to my first class of the day. But then about 30 mins into class (I didn't dream that long or anything I just knew) A zombie broke down the door into the class and starts eating my classmates. I run away and usher everybody out of the class and close the door before the zombie comes to get us. I turn around and the school is in Anarchy Zombies everywhere and people getting eaten I run to grab my stuff out of my locker because I thought I would need them. Then a zombie pins me to the lockers behind and tries to bite me. I open a locker and hit it in the face and kick the zombie into the locker and shut it. Then I grab my stuff from my locker and then all the zombies start chasing me I text my mom to pick me up from the school. I burst out the front doors of my school with a hoard of zombies chasing me I start running home because I don't know where else to run to. My mom pulls up around the corner and I get in and we drive away my family is in the car except for my dad because he is at work. When we are driving by our old house my mom says to call my dad and tell him we will be meeting him at "The Hotel" I tell him and I fall asleep in the car. Then I wake up in the dream to find out where we will be staying it is a big hotel it is taller than the clouds and each floor is bigger than the house I live don't live in that small of a house. My dad is there and so are my grandparents and somebody from school. We walk inside and have lunch. Then I wake up

I dreamed that my mom went into a large building with an orchestra and a movie theater. She was wearing a beautiful white dress and was inviting me into the orchestra hall. I walked up to the door with her and the man in front taking the tickets said something to her and myself that I can't remember before she walked away and I did, too. This happened again, and then I walked out of the ornate white building with gold trim on everything and left. The floors were dark marble.

After that, I dreamed that I, my cousin, and she were all looking at animals in square cages lining walls from floor to ceiling creating more aisles with the backs of the walls being plywood. There were several walls in the same room with an aisle on the right and I believe right center where one could walk from one aisle to the other through. The room was dark, and each animal cage was lit by a single bright light in a corner of the cage. There were aquariums, too.

One animal was a black octopus. It was my mom! My mom had become a black octopus which sat in the back left corner of its aquarium under a black light, the UV lights that glow purple. I could see like a hologram superimposed behind it her laying in a hospital bed. My cousin and I looked on wondering if she would die or live. She lived. Then I left the animal room after looking at the other creatures in their cages including a bird and a black reptile.

I was back in the ornate white building with the orchestra hall and the gentleman taking tickets--actually it was names for the reservations. She was there wearing the white dress. It looked like it was a kimono with a more flexible piece of fabric for the belt and her hair was pulled up like one of the queens from an ancient Chinese painting. She walked me to the orchestra room door again and then we went past a dark movie theater in the same building. The man at the door of the orchestra hall said that she wanted me to see the orchestra. She eventually stayed while I left.

Finally, she died. I said, standing in front of a dilapidated convenience store in a strip mall late at night with a full moon out over a sky of flat, low-hanging, thick clouds, “I'll sure miss talking to her on the phone.” At that moment, an old fashioned black baby carriage--the kind that you push with the baby lying flat facing you on four spoked wheels--moves itself forward, then backwards. Then it moved itself across the street to me and I looked over the top of it to find where a baby should have been there was a black spider with eight long legs which were pulled into a heart shape with the body forming the dip between the two top parts of the heart. Beside it was a silver, cylindrical container with a light blue, hermetic sealing on it and a bow of the same color. I cried, “Mother, it's you! You came back! It's you!”

Now, when I woke up...

I woke up to tell my mother. I noted that both times she became a black creature with eight legs. She, being sick, didn't want to hear about it before going to the hospital for radiation therapy mapping. I told her younger sister who said, “But what does it mean?” I told her that I had no idea. She said that it didn't sound good.

In the hospital for radiation therapy mapping, my mother's creatine levels were too high. She needed dialysis, and they admitted her. She had a reaction to the dialysis. She had to have emergency embolization of a tumor that started bleeding because of the heparin from dialysis. She was laying in the ICU half dead like in the dream where she was a black octopus. Everyone but myself and my cousin thought this was the end.

We both, with me out of town and him in the room with her, watched on--just like in the dream--to see if she would live or die. She lived--just like in the dream.

Then she moved to a hospice. She lived there for awhile and then suddenly got sicker and died.

Just like in the dream, she had a close call, pulled through, lived for awhile, then died quickly. The last part of the dream though...

What do you think it means? By the way, the orchestra hall door was shut until she opened it the first time she walked me there. Then the right door of the double door leading into it remained ajar for the rest of the dream.

Recently had a dream that I was driving down the highway in my area only to see multiple mushroom clouds forming in the distance in multiple directions. Upon further mental examination of that dream I decided to throw it out there and see if the collective dream scape of Reddit has been apocalyptic, perhaps foreshadowing negative global events. Not trying to be morbid just doing this for amateur scientific exploration.

The sky had a blanket of clouds but the daytime light caused it still to be bright outside. Magma spewed randomly out of buildings and burned people alive. I got burned alive a few times but continued to re-appear in the dream.

Eventually my parents stopped by and nonchalantly pulled me out of the scene.

My parents (and not my siblings) as well as some extended family got together to first watch a football game and then wait for the end of the world announcement. Once the end of the world came we knew we would all have our lives ended. I was terrified, my family was excited.

In the dream, I believed that if I were to go to Heaven after death I'd be severely tortured for a long time period for everything bad I've done in life. I was in a constant cold sweat throughout the dream. Hell was in Heaven in my mind, and the existence of Hell never even crossed my thoughts in the dream.

All said, I'm happy it was only a dream. Now I'm just curious as to what it means.