I got a "7" shaped fracture in my left arm, near the wrist. I fell when doing ice-skating and I couldn't move my wrist, just the fingers. I went immediately to the hospital and after 2 xrays, some plaster and 40 days it healed.
You must go immediately to the hospital if you think you have a fracture. Wait too much and the bome may start soldering the wrong way. And if there's something else broken (cartilage for example) it's a must to tell the doctor exactly how you fell, so they can make a magnetic resonance an see what happens inside if neccesary.