I keep regularly waking up in the middle of the night feeling trapped. Like I'm trapped in a small dark enclosed area and cannot get out. When I eventually snap out of it I'm out of bed have even knocked things off my drawers as I'm so disoriented. It feels so real and like there's no way out. I feel petrified like I'm truly trapped and am going to run of air.
Has anyone else experienced this? As I've got in to bed I've just realised this has happened quite a few times lately. I don't like it. Ideas on what it is, what's causing it?