plant question

i have a plant in an aeroponic system light has been on 24/7 it is only around 8 inches tall and allready had pistols showing definatly a girl but why i have not switched to 12/12 no interuption nothing just noticed this today any suggestions or help

Its not out of the ordinary for a plant to show its sex by producing a few flowers once it reaches sexual maturity.

its pre sexing

so question is it an autoflower strain or do i still have to go 12/12