I think you need to wait a little longer before you would know. I am thinking it is not male. If you get another ball next to that one normally about 3 then yes it would be male. Are you flowering it at the moment or still in veg? Looks like you are vegging right now, am I right? try not worry just yet but keep your eye on it. I have one plant that looks exactly the same as that and I have not decided yet. Another sign for me is that your plant is not very tall. Male plants grow like crazy they get very big very fast because they want to sow their stuff over the female, so you may just be ok. But it really is not possible to say just yet.