my body has problems.the distance between my leg is big,my leg is short

and bent,i cant walk with balance.my arm is short,so when i write i
have to bend my head a lot,very hard.the bone of my chest is small,so
it press my heart a bit.but nobody know my feeling i have to do the
thing command people do,out of my reach.tell me what should i do
my parents dont realize the truth though i have said
enough.They say they hope me to be better than them,but i cant do that
in this sittuation.they think walk is a easy thing,we dont understand
each other.i am very shy to see a doctor couse no people in my
sittuation.