I found it hard to tell, in one picture it looked like it may be male. But it also seems like (and this may be picture quality) that there not even showing sex yet. But you will know when you see it, the females have white hairs where the branches meet the stock and on the top and sub-branches. The males dont, but they have sacs, if you see sacs cut them down immediately. You just have to give them some time to show their hairs if there female, you dont want to cut one of the ladies down on accident.
I know with my plants the males were fortunately pretty obvious, you have some time to find them though before they open. How long have you been growing them and flowering them?
Any chance at getting a better picture of where the branches meet and the top of the plant?
-LeFay