Checking my last day of health coverage - any advice?

I am not sure what date my benefits stop after being let go as a software tester. It has been weighing on me all week. I do not want to be surprised by a bill. Did coverage match what HR said?

Ask HR to confirm the exact date in writing. I also called the insurance company to double-check.

Dental and vision sometimes end on a different date from medical. Mine did.