DD1 broke hers when she was four. Fell over after running down a hill, went pale, complained of sore shoulder. Appeared to recover within an hour, but was complaining again 24 hours later at which point we finally got round to taking her to hospital
It was painful for three or four days, but much less so once it was strapped up in a sling. After that, it eased off quite a lot. She lived in the same pyjama top for a couple of days, because it was too painful to take it off. Then graduated to tops with very wide necks and/or buttons.
After a few days, she had got used to doing things one handed and just got on with life. Had a fracture clinic appointment after a fortnight, at which they said it was healing OK and to take the sling away after another week (so three weeks in total). When the lump has completely disappeared from the bone, it's properly healed.
During the last week, she just used the sling at school and when she was doing anything relatively active (made her wear it in the garden so she didn't absent-mindedly go up the climbing frame ). She was the centre of attention at school and enjoyed lording it over her classmates, but was mildly annoyed that she couldn't go swimming with her sling on.
We still have the sling in her dressing up box and her X-ray on CD (were lucky enough to be near a high-tech hospital when it happened!) Her two year old sister plays doctors with the sling and annouces that everyone has "broke der toya bone"