Can't see anything yet. They would show their sex at the "armpits" of the main stem and offshoots. Look at where every leaf's branch meets the main stem, if you see a little ball with 2 white hairs popping out, it's a female. If you see balls with nothing popping out, it's probably a male, but wait a few days in case it's the start of new growth or just underdeveloped female calyx.