ChrisOnyii

It's always advisable to wait a day or two instead of filing exactly on 90 days.

https://marriageapplication.cookcountyclerk.com/

The Cook County Clerk's Office of Bureau of Vital Records is currently closed as part of the COVID-19 emergency response measurers of the State and County.  We thank you for your patience as we do our part to help slow the spread of COVID-19.  All online services are suspended as of March 18, 2020 until further notice.  Please check our website at www.cookcountyclerk.com/agency/vital-records for the latest information on when full office services will resume.

I would advice you ask your fiance/fiancee to write the embassy and request the packet be send to his/her email. That was what my spouse did when we checked ceac website and it said our case number says ready. Do not wait for them to send it. It may take weeks to get to you. Secondly, It's of no use going for medicals without the packet from the embassy, you cannot be accepted for medicals without the letter.