Opinions on these...first grow.

The plants are about two feet tall, and I have been on 12/12 for about 12 days now. i am having a hard time figuring out the sex of these damn things. I have watched and read about every damn thing I could find on the internet for help. There seem to be calyx's forming now, are still small. They are not raised on a stem like some say that would indicate a male. But, they have no hairs coming out of them yet either. There are alot of area's where it looks like buds would be growing when it starts to. Just trying to figure these out. (First grow if you couldn't tell already)

Female pre-flower:


Male flowers do not have white hairs sticking out and form clusters of green balls that contain pollen.
Male Flower:


Thanks to Greenhouse Seeds. Those pictures of yours just aren't clear enough for me to say.