10 POINTS! JUST ANSWER!?

I'm 23 year old girl. I have a doctoral M.D. So basically I'm a doctor. I have my own office, and i work with genetics. So like whenever i meet people and all, you know like people talk then its like whats your occupation, then i answered I'm a doctor...and the next question is how old are you with a surprised look...am i really too young.?