desperate scene

The room was cold and I had just taken a shower. I climbed on my bed and got under the warm covers, finding the perfect position. I could hear the soft sound of the drizzle outside,  and I felt at peace. Not long after, as expected on nights like these, I fell into slumber.

Suddenly, I woke up. There I was lying down as I opened my eyes. I was confused of where I was. No longer on my bed. Instead, in this ... box. Suffocating from the lack of light and fresh air. Feeling asphyxiated with the thought of being trapped any longer.  Because seconds felt like a lifetime.
I wasn't sure where exactly I was, I wasn't sure if I wanted to know at that point.  I was constricted to any movement at all and I started to hyperventilate as I am claustrophobic.
The smell of sweat and dirt intoxicated me. I couldn't move. I couldn't breathe.
I couldn't stand it and started to scream. I pushed the walls that confined me, but to no avail. I kicked and pushed, called for help through the endless sobs.
I could feel things starting to crawl on my skin, bitting me. The pain was excruciating. I was being eaten.. alive. Or so I thought.
I wanted to die. There and then. I gave out one last scream.
..
Then it dawned to me.
This isn't a joke. No one can hear me for I am underground. I am buried. I am... dead. 

I woke up, sweating and crying.

Scary isn't it knowing that when you close your eyes at night, you might not wake up in the m. orning in the same state you were in the night before