You are probably OK, Although, a traditional dry hop is done after fermentation is complete. I just did a brew that I dry hopped last time, this time I did a 45 minute hop addition after flameout and before cooling, for aroma. We'll see in about 3 weeks how it turned out.
adding: I think that the timing of hop additions for flavoring/aroma is not as critical as the timing for bittering. It will make a difference on how much aroma or flavor you get, but will be less precise, timewise, than a bittering addition.