What Causes A Lump Of A Golf Ball Size In The Xiphoid?

I fell on some ice and landed on my right side a d knocked the wind out of me. Started to notice a golf ball since lump wjere my xipohid joint is. I went and had xray done and they didn t see any thing I ordere a cat scan because I also have a lump on my leftbcolar bone and was told both of those spots where dislocated and then told they are nothing but he noticed a small fracture on my rib just below my collar bone. What could be the other possibilities it may be. Its hard and feels like its attached to my sternum doesn t move but hurts Some times that I cry. It hurts t bend over an takes my breath away.