While i was at Red Kangaroo, 5 mins before the end I did a backflip which i failed at and landed on my head. I heard a crack, so i managed to roll onto my back next to the trampoline. I waited an hour for an ambulance and was taken to the hospital on a spinal board. After an MRI and being looking at by a doctor they told me that i had not broken anything but i was going to be very sore.