Well just so you know I've had an axie for a couple of months now, she's 22cm long. Alwasy 100% she was female. Last week her cloaca bulged a bit so now I'm not so sure.
I have seen 3 juvies in the last two days, all less than 15cm, all three with massive bulging "imma MAN" cloacas.
Length has nothing to do with anything.
I'd wait but I think your lecustic might be male, the other two it's too hard to tell.