Nightmare, this is a short story

In the depths of my sleep i see a place of darkness, a maze i can't escape. I smell the stench of rotting trash. I feel my heartbeat against my chest as a door slams shut. I run, I try every door in front of me but none will open. My chest aches as I struggle for air, i push myself to run faster. I can hear footsteps behind me. I can only see the shadows turn into blurs as i run as fast as i can. The panic threatens to tear open my chest as my pursuer gets closer. The cold dirt makes my escape difficult as my feet sink into the soil with each step. My muscles ache but i push on as sweat drips from my exhausted body. My heartbeat fills my ears, pounding in my head. The stench of rot getting worse, choking me as I get to a dead end. The temperature drops and my breath becomes mist. I can't escape. I frantically search the stone walls for an escape, for anything. I can hear my pursuer right behind me, my heart stops. Suddenly it's beating so fast i feel faint. I can feel myself falling. The taste of bile filling my mouth as I'm nauseated with fear. I try to turn to see my pursuer, but all i see is me, standing in front of a mirror, glaring at myself.