Well, ill tell you i saw those exact same things on my plant in the first couple of days of flowering to later show me that it was a girl. So in my experience that apears to be a female. But yes you have to flower for a good week or two before you see real "pistils".
i've been going thru sorting mine out the last few days & just got finished looking @ the diff. between male & female pre-flowers thru a mag-glass. i'm no expert but from what i get from it, those are female pre-flowers
the whole point in growing is that you work out your females before you start flowering, you can tell before you start flowering easily if you see a white hair no matter how small its a female, all preflowers look the same when they first appear but if it s a female will show a hair after while