Screaming or howling

This is a dream i have had recently, and for two weeks now, i have been unable to sleep most nights, and if i manage, i resume to having nightmares. I fear sleep now, terrified of what dreams may be lurking in the shadows. It started with a simple ride through the night with my older sister,we were going to a lake nearby to jog a few times around the lake. I remember driving over the railroad tracks, and looking to my right to find that there was a train speeding down the tracks. A shadow appeared in the lights of the train, and i came to realization that there was a boy standing infront of the train. I jumped out of the car, running head on to the train just to save this boy. I heard him screaming, grief was strong in his voice, and as i neared to him, there were tears streaming down his face. This boy was my best friend, who in life, is at times suicidal and lives not too far from these railroad tracks. I never could bear to lose him, so i grabbed him by his arms and tried to pull him off of the tracks. The train was getting so close, and the metallic smell of blood was strong. His arms are sliced up from self mutilation, and the blood was all over my hands. I remember the pain in his eyes, i was begging him not to, and i refused to get off of the tracks without him. The trains headlight was shining straight on us now, so close, and i grabbed his arm to pull him off. At that moment, i turned one last time to look at the train. Everything went black, and i felt pain course through my body. I had been hit. The next thing i remember is seeing flashing red lights, paramedics all around, and the sun was rising behind the mountains. I was on a stretcher,my head,my back, and my legs were in severe pain. I looked to my left, only to find that there was glass from the headlight of the train,blood was everywhere, and i lay eyes onto my friend. He was still, but he was alive. And it seemed like the sky was painted in our blood. Then my eyes opened,and it was only 4:45 in the morning. Its a terrifying dream for me.