Well... I would give it up to 2 weeks probably 1.5 though being as yours looks like a baby still BUT it should show sometime within the 1-2 week range. I like to wait until my plants preflower in veg to even switch them over. But if time is a thing for you I get that...
Calyx that's the word I was looking for! Yes it's looks female and the whole damn plant is gonna stretch hard. During dark phases plants actually grow vertically at an accelerated rate. Thus, stretch. It's not a bad thing.