What Causes Severe Pain In Back?

I was on my friends boat 3 weeks ago yesterday and we hit a wave that sent me flying up in the air Landing on my spine. I was in instant extreme pain felt two cracks inmy lower back and was unable to move for hours. My pain tolerance is extremely high being that I had two emergency c sections but that pain toped the cake. I am still in pain but I'm able to move around better. Luckily I have been off for the holidays and returned back to school today but today I came back home broken. I don't know what I should do at this point? I'm scared that something may be fractured .