i keep having a reoccurring nightmare, I am deathly afraid of the dark,
In this nightmare there's usually darkness and naturally I go to turn on the light, when I find the light doesn't work. I realize I'm dreaming and I freak out because I am trapped in darkness, so I scream to wake myself up,

But as I'm screaming my voice becomes clogged and it is muffled and nothing comes out, and the. I am stuck in the dream even longer, and then I struggle with the darkness while trying to scream and after what feels like hours I finally wake up

It's very scary and it's been happening a lot lately.
I have no idea what it means or why it happens except that my brain likes to scare me with one of my biggest fears