Thank you for the advicewow, that is a lot of picutres! The sex is not showing yet, you will need to wait longer. Males are normally quite lanky and tall compared to females, yours looks most likely female but as I said, too soon to tell for sure.
A loupe is unnecessary for sexing plants. Eventually they will show very clearly to the eye. No sense trying to be microscopic about it.Get a jewelry loop....look between 5th and 6th node..pre flowers might be showing..also try reducing light hours by 30 min.. worked for me..