Gender signs during veg??, and leave tip abnormal?

I'm in 18/6 and i see what looks to be first sign of gender.. proud to say its a girl!! am i right? (ref pic 1) . b/c showing sex in veg, should i start to flower?? carmelicious strain


** ALSO: I wanted to ask if anyone has experienced the tips turning like this and what possibly cause it might be (pic 2)

that looks like nute burn,mine looked the same when i gave em too much nutes,i flushed them with 2xthe amount of the pot ph'd pure water,i think those are preflowers i had those mine turned out female

2.http://www.icmag.com/ic/showthread.php?t=11688

1.https://www.rollitup.org/marijuana-plant-problems/132382-deficency-nute-burn-diagnostic.html

http://images.google.com/imgres?img...tomato+leaf+chlorosis+picture&um=1&hl=en&sa=X

yes girl it is so far. as for pic 2-could be humidity, overt fert with nitrogen, heat stress

PLEASE*!*!*! more input on this... maybe heat stress.. I'm trying to fix this problem. it seems i am having trouble getting the temps down. 90 degrees is what I'm dealing with. I have searched and searched and not found anything that has leaf tips curling as bad as the 2nd pic posted..

I flushed 3 days ago.. I've rlly been light on the nutes as is, so I don't think its nute burn, but don't rule it out. PLZ anyone w/ knowledge

Bump...........