Demonic Dream

Last night I fell asleep on my couch in the living room with my boyfriend in our house. I woke up at 3am after a horrid dream. In the dream it's nighttime and there is someone knocked my on the door, so I get up to answer the door. When I open the front door no one is there, instead there's a black mist. It creeps in the house but I don't think anything of it. After that I'm the dream things start getting creepy and I'm starting to hear noises. At the end of the dream I watch myself be killed by the black mist. I woke up in a cold sweat at 3 am and it's pitch black in my house. My boyfriend is not in the couch. I then get up to try to find him, he's in our room with the door jammed shut. I had to push my body weight against the door to open it. When I asked him when he got to bed because the noise of me opening he door wakes him. He tells me he does not remember and that he never even woke up. My boyfriend is a super light sleeper and anything will wake him up which is why it threw me off when he tells me he doesn't remember getting up to go to bed and if he did he would have woken me up to have me go to bed as well. I think nothing of it. I go to work and headed to work I am rear ended stopping for a ambulance. Still think nothing of it. When I get home around 4 pm I enter the house and the house temperature says 80 degrees, however that's not how it felt. I instantly got chills and goose bumps, I go into the middle of my living room I then hear breathing next to me.

I just want to know what's going on. What are the thought on what's happening?