Hello everyone ?! Ladies, could you please tell me if it's possible to…

Hello everyone ?! Ladies, could you please tell me if it's possible to start my maternity leave on October 11th, at least that's what the doctor wrote. I mean, can I not go on maternity leave as of October 11th and work until the end of the month officially? Is this not a violation of the law? And even in November, is it possible to work officially or is it a violation of the law? Since I will be working from home anyway, and the employer will pay me unofficially anyway.