wondering??

Hello everyone!! I am pre op but am almost there!! I have one more appointment with my endocrinologist and then I will be able to submit all my information to my insurance company for approval?? I hope!! I was just wondering if anyone could give me time frame as to how long they schedule your surgery after your insurance co. has approved you for the surgery?? I hope this makes sense!! Please I would appreciate anyone information regarding this matter. Thanks a bunch, Lauri