I don't know what libs think about it, but DGAF one way or the other.  

I've got enough problems in my life without worrying about somebody else's confused gender identity.

You want to hormone yourself up, go afrieckin' head: testosterone, estrogen (naturally present in males as well as females) whatever. 

If swimming, track, whatever is that important to you, you're already too eff-ed up for rational sympathy or condemnation.