Last Friday I fell off an obstacle on an obstacle course about roughly 6ft tall and I landed on my back and hit my head on the ground. When I got up my back hurt and I was dizzy and at first everything looked like tunnell vision. I had a headache for a bit after that but it went away. I have a history of sciatica and my lower back had been hurting minimal before the fall but now my lower back, reaching up to below my ribs on the right side and inbetween my shoulder blades hurts alot and is hard to move. as well as having a sharp pain near my tail bone. I am a 21 year old female in the Army.