So we had trampoline for P.E. today at school and we had to do a front flip well i didn t flip fast enough and ended up slamming down on the trampoline on my upper back. My chin slammed on my chest , and i couldn t breath for a couple of seconds like maybe 10. Now my whole upper body is sore including my back chest and neck. Well my chest hurts when i try to take a deep breath. Also when i got off the trampoline i tasted blood all in my mouth. And no i didn t bite my tongue or anything.