btw, I'm not 'female', I'm a boy. How can I change it on the profile?
In answer to your last question:
go to your Profile Page... find the application titled, About Me... click over, Edit... then find Gender, which is below your birth date... and choose, male.
P.S. after you make your correction(s) on the About Me application, don't forget to scroll down that same page and click the Save button.