Should I worry!?!?

This morning before work I accidentally opened the closet on my plant (flowering 5 weeks) half way through it's night. I realised what I was doing as soon as i opened it and shut it. The plant was mostly in the shaows of the closet, however, there is no denying plent of light got in. Should i fear the harvest of my beautiful 4 foot plenty to the H"" word? and how soon will i know if it is ok?

it should be fine, just NEVER do this again

just think a natural growing plant in the wild might get shone on for a few seconds by headlights or the moon light