I Had An Accident About Three Years Ago. I Walked

I had an accident about three years ago. I walked into something fell backwards the know knob of my bedroom door went into my back full force. At the time the pain was so bad I had to go to the hospital. I was told I had suffered trauma.. no x-rays were taken! I find of late the same area is painful and uncomfortable is this common three years later. I just turned 60 and in good shape! Thank you Anna