that late in the cycle your probably ok, especially if you're using clones or non feminized seeds. I did have a whole crop seeded out one time because i used a few seeds my buddy gave me, mixed in with my clones. I only found maybe 4-5 male flowers in the whole room! A little pollen does a shit ton of damage. My roommate didnt pay the power bill so they turned it off and it took two days to get it back on. Disturbance in light cycle CAN BE a MAJOR problem.