Nose surgery 3 months after one time cocaine use, can I still have my surgery?

I used cocaine 3 moths ago, small amount, wasn't really attracted to that, and I have deviated septum surgery in a week. Wanted to know if they'll make me reschedule my surgery, or even cancel it, or this one time use shouldn't be a problem. Thanks. P.S - of course I'll ask the surgeon as well, no matter what will be the answer, just want first opinion, Thanks