>>1 You are certainly not over-reacting. I can sympathise with you, because I have that problem. It's horrible when people put you down. Anyway, I've finally made my voice so that they can't comment on how bad it is anymore (ha ha ha...).
Don't give up on what you really want! Don't be a pushover! Stand up for who you are and show them your awesomeness!
And you are not a bitch by complaining about this. People cannot just put you down and expect you to condescend to them.