When does my employer coverage actually end? - any advice?

HR said my health plan continues for a bit and I do not understand how. Thank you in advance. I do not want to be surprised by a bill. What should I do about appointments?

Keep a copy of any coverage confirmation in case of later disputes.

Thanks for writing this out. I went through something close to it 4 months ago, and it got easier once I kept a simple log of every call and form.