How Can Bone Or Spinal Fracture Be Confirmed?

hi i fell on the bottom of my back today while ice skating. I had big pain & for some time after it i couldn't breath. I went after that to the hospital & did an Xray & the emergency dr. saw me, he was a genral physician. he told me that any fracture at the bottom of the back can't be perfectly seen on the Xray & may need a CT scan. He asked me to take some anti inflamatory & some pain killer, go home & if the pain increases come tommorow to see a specialist.
I can't wait now because i am too concerned that it is serios. since i had the pain killer i am feeling less pain even if it presists. is there a way to know if i have any fracture. thanks