jerica i think it's good to have the i-don't-care-if-i'm-read kind of mentality, but a better thing to do will be simply have more confidence in yourself. if you are unsure of your gender people will read that, and imho that's the dead giveaway for most ts 90% of the time.
honestly, people come in all shapes and sizes and so long as you don't get outted 50% of the time you are fine! maybe a lil androgenous but still fine! i've met dozens of women who are tall, masculine, flat, have big jaws or adams apple or even faint mostouch, but when they ever got asked by someone curious their reaction will always be anger frustration or just find it plain amusing, but NEVER scared or the oh-no-i'm-read look.
so perhaps you can just rest in the knowlege that you are female. make sense?