If it’s an emergency trip, I would contact IRCC as soon as possible rather than just waiting. IRCC specifically says to contact them if you plan to travel before receiving your e-COPR. Explain the emergency clearly and provide supporting documents, such as a doctor’s letter or proof of travel, if available. Hopefully they can assist you before your trip. Also, e-COPR is important because it confirms your PR status, but for returning to Canada by commercial transportation after travelling abroad, you generally need a valid PR card or, if you are already outside Canada, a PRTD.