Laid off this week, where do I start?, insurance claims processor here

I lost my job as an insurance claims processor and I am not sure what to do first. I have read a lot of threads here and could not find my exact situation. I have a few weeks of savings and a rent payment due. Which steps were urgent?

Thanks for writing this out. I went through something close to it last year, and it settled down once I kept a simple log of every call and form.