I think I have tumor were my tail bone use to be

I recently had a fall on my tail bone before a colonoscopy. I had a tailbone at that time now I dont have anything there except soft tissue like the hemorrhoid they found in the spot were it was. Should I be concerned do you think it is cancer? I forgot to mention that it feels like arteries and some kind of soft stuff were it was. Another thing is that I fell just before my colonoscopy on ice right on the the thin bone at the end of your spine. That is now missing stringy and artery like things are now in its place.