Hi, on Friday I was at trampoline nation and attempted a backflip and landed on my neck, I then couldn t breathe for awhile but then I got back my breath it hurt at first to breathe but now there s no pain anywhere but on my chest sorta on the left side but really near the middle.. I can t sneeze, laugh, pick myself up or really move while laying without it hurting.. What should I do, what did I hurt?