If a debit card from First Midwest Bank is lost or stolen, it is important to act quickly to protect your account. First Midwest Bank has established procedures for reporting such incidents. Generally, customers can report a lost or stolen debit card through their online banking portal, or by visiting a local branch. Additionally, First Midwest Bank typically provides a customer service number where you can speak with an associate about your situation. This may be a faster option if you need immediate assistance. It is advisable to monitor your account closely for any unauthorized transactions and to change your online banking password for added security. For detailed instructions and to find the most updated contact information, it may be useful to check the official First Midwest Bank website. They may also provide guidelines on what to do next to ensure the safety of your funds and personal information.