Hey how many weeks are you in? Preflowers usually show up around 5th-6th week, in the first pic it looks like there may be a Calyx but not 100% sure. Plant does look healthy though goodluck!
I'm right around the 5th, I have another one of the same strain beside it and I can see 2 white pistils popping out from some places. This plant looks the same so im hoping this one is female too.
well if their is white pistols than it is pre flowers, but if you have not switched you lighting it shouldnt show flowering, & in the pics you showed that is not pistols just new branches, but dont feel bad alot of people mistake that for pistols, I have a nice sized plant that just started growing fast as hell (in my sig) well now its twice that size since last week, & It is not even under 12/12 & is smelling dank as hell, I will post new pics but yours my friend looks healthy cross your fingers hopefully its a female
preflowers are very hard to correctly identify, so don't trash anything until you actually see definitive parts form on each plant. Good luck, hopefully it's a girl.