7 week veg...sex help

So I have been vegging 5 plants for 7 weeks now since I heard waiting till they showed sex was better than forcing to see. I only want 1 mother and the one that's been my favorite seems like it could be female but not sure.

Here's a few pics of the top....are the single (what I think is a leaf) growths signs of fem
ale?

Thanks in advance.

Its hard to see. If anything its showing male. I can make out little growths in the crack, tho that could just be a leaf starting, but see no pistils so if it is a preflower its most likely a male. Wait and see, if they start growing in clusters its definitely a male.