Replying to Over shooting jumps

So friday night, my mountain built these medium size jumps. First run on the mountain, and i decided to just guess the speed. The first jump my speed was perfect and I landed right in the sweet spot, but the second hit, I shot the jump straight to flat, and compressed my spine and cant do anything physical besides walking for a week or two (says the doctor). I'd say I got away lucky without getting a compression fracture, but does anyone else have any experiences overshooting?