yeah you should be seeing white pistils any time now, by the end of October, you'll have nice little cola's man. She'll get about 6-8 inches bigger at least and some stretch. Leave that plant as long as you can, I'm guessing your first frost is mid to late October. You'll have time to get some bud, no worries after September 20th or so your days will be twelve/twelve and then shorter after, so she'll really mature fast after that date, It'll be in a frenzy to flower and seek Pollen or Grow balls, hopefully you get a female. I suspect it probably is because it looks to be all ready getting ready to flower and also you would probably in all odds have seen the Male sacs by now if it was one.