Benefits end date after a layoff - any advice?

I am not sure what date my benefits stop after being let go as a quality inspector. I have read a lot of threads here and could not find my exact situation. I have an appointment next week. Did coverage match what HR said?

I moved my appointments earlier while coverage was active. It saved me a bill.

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