Is my bra size too small?

Im 19 and my bra size right now is like an A cup. is this too small in your opinion because i think they are

Im not sure if me staying fit by working out causes them to be small due to reduction in adipose tissue when working out or whether genetics contribute (all the female members of my family have relatively average sized boobies) am i doomed with small breast? (even though theyre so much better for working out in and not a nuisance)
Is my bra size too small?
Add Opinion