How do you report hours that vary week to week?, medical assistant here

I work some days through a staffing agency while still certifying. I have read a lot of threads here and could not find my exact situation. Pay posts on a different day from when I work. Who can I ask without risking my claim?

Keep everything in writing and save the confirmation numbers. It saved me later.

Report honestly and keep your stubs. An honest small error is much easier to fix than a missing report.