You can have signs of sex before going into 12/12, I have preflowers on some of my clones/moms in veg-mode. It's not uncommon.
In the future you may want to ask questions like this in the FAQ section of the grower's forums. Your post will get more viability and more responses than asking in a thread that has been dormant for 6 months.
Best of luck on your grow and feel free to ask any questions you have here:
Frequently Asked Questions - 420 Magazine
Greenest regards,
Steve
