That sounds unbearable. And also familiar.
When the mind won't stop replaying the worst, it's a kind of psychological claustrophobia. Like there's nowhere safe inside your own skull. No off-switch. No room to breathe. And I know what it's like to cry until your eyes hurt, and still feel like nothing's leaving your body.
The part about not being able to CTB, even when you want to—that's your survival wiring doing what it was built to do. It doesn't mean you're meant to stay. It doesn't mean you're not allowed to go. It just means you're human. And the human body fights to keep breathing even when the mind is begging to stop.
You're exhausted because you've been carrying something way too heavy for way too long. That doesn't make you broken. It makes you tired. There's a difference.
You're not alone in that place—even if it feels like it.
And even if you never find a way out, you still deserve gentleness while you're stuck in it.