What Causes Hard Feeling Under The Fingertips After A Left Index Finger Fracture?

I fractured(undisplaced) my left index finger distal phalanx at the beginning of July, while on holiday in Scotland. I was told by A&E to keep the hand & finger moving, and I should use my finger, using painkillers to treat pain. They gave me a cradle to protect it from being knocked. Since then I have been told by a different hospital & doctors that this was incorrect advice. At no point has any other doctor/A&E other than the first A&E seen an X-Ray. I have noticed during this week that I can feel a distinct hardness at under my fingertip, positioned to the right side, when I press the finger onto solid/hard surfaces. It does not feel like swelling, and it is not obvious from just feeling my finger. Is this normal? Should I ask for a follow up x-ray. My concern is that I may have disturbed the position of the break while following the first advice.