Preflowering and HELP!

My plant nahbee is exactly a month and a week old (five weeks). &today i was looking at her and noticed that she had a couple of pistoles popping out of the top.

is she preflowering? i keep my lights on from 7am until 11:30. isn't it too early for her to start pre flowering? and when should i start flowering if she has pre flowered?

:bigjoint: PEACE

in the pictures you can't really see the hairs.
 

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