Can you tell if it's a male or female yet?

Too young. The leaves are still in pairs, not alternating. Have you flipped it to 12/12 lighting yet?

 

How to Tell Sex of Cannabis Plants (with Pictures) | Grow Weed Easy

 

It most likely is a female.

 

The longer it waits to show its sex under 12/12 lighting, the more likely it is to be female. Males tend to show first.