Does anyone have experience with an expiring visa? Would I have to leave France immediately? Are there other options?
Thanks in advance
I don't have any first-hand experience but I don't think en expired visa is an issue as long as you can prove that you made your appointment with the préfecture before it expires.
I know the pages I found don't describe your exact situation but here's what I found:
Hopefully you'll get a récépissé at your next appointment!
You are so helpful, Nathalie. Thank you for the help and I will look into this some more.
There are a few more details of my situation on the "how to start residency process" thread.