First I have to say this is one of the most vivid dreams ive ever had, but only a certain part of it. it is multiple layers.

I had this dream from a previous night of drinking some tea with passion flower wild lettuce and gingko bilbo. some potent stuff ill say!

So, I'm laying on my stomach on a bed, with my arms around Nada whom is facing away from me and sitting on the bed.
We are speaking, im unsure of what.
(the most vivid part)Then suddenly the pressure changes, everything goes eerily quiet.
The lighting in the room is completely different. everything is glowing and has this fluorescent atmosphere. I feel mildy like I can't move, there's this slight anxiety building up.
Then a very large dog, looks like a black and brown st Bernard poofs into existence above me to the left. it continuously looks like its fading in and out of existence. its very stoic doesn't seem to have awareness and is just floating there.

I ask nada if he sees this thing, no response. I am still holding what feels like him. I sit up stil holding him (i can move now) his torso comes undone from his legs, like a barbie dolls would. his legs are underneath me now his body parts are black, not really him.
I realize I've gone to another plane where he is not. I start calling out to him. I am hearing his voice every once ina while but I can deduct he can't hear me, I feel like I want to get back to him.
I start to float up I'm realizing more that this is a dreamlike world but not in fact realizing im dreaming because of the separation anxiety distracting me.

I want to leave this room explore more, suddenly the pressure changes im back on the bed. I call out to nada he is about to leave the room with his arms full of these colorful cups. he was going to help my mother with something.

he tells me that i just passed out, I start explaining my experience.
Then I wake up for real and I start to really tell nada of my experience ( weird doing that twice)

Would like to know anyones opinion on this, if they have ever experienced going to a light realm like that.

This is the nightmare portion of the dream, im unsure where this connects at to the rest but I just remember it,
I am in this dark place with nada, it has many rooms and corridors. I believe its some sort of futuristic asylum, there is one person that started chasing us like he wanted to kill us. I don't remember how we got rid of him.
There are many grotesque scenes taking place wherever there are people, I am scared I also have a strange sense of deja vu.
Thats it, I haven't had a violent dream like that in a long time but this one wasn't very vivid.

Some input would be helpful thank you!