HELP please, I accidentally work before the school starts.

[Patrickkkk]

I have been stressed out for this situation, the school starts on January 9, but I have been work at last year December 20, I didn’t know that international students who can’t work before the school starts, would that affect when I apply for the PGWP or PR, dose anyone have the similar experience could share with me, I’m so stressful and painful.