12/12 from seed. How to tell if hermie or male?

So ive got this little stunted plant that was infested with fungus gnats as a seedling. It's been about 4 and a half weeks now and its still less than 3 in. but it seems to be showing signs of a male.

I was thinking about grafting the little guy onto another plant so it grows up and gives me some pollen.

Don't want to waste the effort though if is actually just a hermie.. How do i tell the diff?

-I give you one free Google search!

if you see pollen sacks growing bin it! but thats prob cos its just a male. if you see preflowers then give it a chance, if its battled gnats and come through it could turn out to be alright.
dont bother with the free google search, people on here are more qualified than them! then again most people on here use google and then answer any questions, theres another thread about that shit though.
hope it turns out alright 4 ya.