Is it possible to be normal with a chromosomal disorder?

Hi :)

I guess this is a weird question coming from a 15 year old, but is it possible to have a chromosomal disorder but still be completely normal?

Like I'm in the IB Program (the one harder than gifted) and I have a 93% average, I play competitive soccer, I run everyday/go to the gym, and (not to be cockey) guys like me.. so that means I look normal?  Yet.. I have a (mild) webbed neck (you have to look closely), low hairline (no one notices?) and I have epicanthal folds (but I'm asian.. so it looks normal as well).  

So basically, I have some physical symptoms but I'm smart and I'm normal.. is that possible? Should I get it checked out?

Thanks, Jessie :)

[Jordanna Joaquina, MS, CGC]

I am not completely following you. Are you saying that you are known to be affected with a chromosome disorder or that you think you may be affected with a chromosome disorder?