Flowering Question

ok so I started the flowering stage three days ago and it has already grown quite a bit.

I was just wondering how soon the gender should be apparent? It already has what looks like little green pistils, don't know if thats common in both genders though...

give it at least two weeks to get an accurate view, even though pistils may be formin they can be easily mistaken your first time around (they were for me anyway lol) plus some of your plants might hermie but that could happen about anytime up to harvest

It will take anywhere from 1-2 weeks to show sex in most cases, I have had it take until the 3rd week but this is rare. Those little green things are not pistils thats the stigmata. The pistils will look like white hairs, the males will have balls. Once you have done a couple of grows they will be easy to spot. Good Luck