You've put 3 matching posts in 3 boards about an accident 2/3 years ago basically just criticising your dad. If you search the forums you'll find that many riders break their back - I broke L2 & L3 in 2006 - spine pinned, 6 months in hospital etc. Even if you are under 16 you have a right to see Doctor in the UK (Not sure if you are in the UK). Why not go see your GP?
I cracked a vertebrae at 16 I was working ( with horses ) it hurt a lot in time it wore off .
The site of the break was noticed when I broke another more than thirty years later .
if you functioning and fine I would let it go .