I have a septoplasty this week and I partook in cocaine usage a week ago. Should I be worried or will enough time have passed?

In my practice, I would recommend you re-schedule. Cocaine both impacts your nasal tissues and your cardiovascular system. be safe. 

If you just used cocaine in your nose recently and you are having nasal surgery, you should tell your surgeon immediately. You might want to consider rescheduling because the drug causes a lot of inflammation to the internal nasal lining and may lead to postoperative complications that otherwise could have been avoided.

Most nasal surgeons will not perform surgery on the nose  when patients are using cocaine. Best  to be off  cocaine for one year.