Health coverage after losing my job: marketplace or Medicaid? - what worked for you?

My employer coverage ended at the end of the month and I am trying to work out what to do as a call-centre agent. Thank you in advance. I do not want a gap in coverage. How fast did coverage start?

Thanks for writing this out. I went through something close to it 5 months ago, and it got easier once I kept a simple log of every call and form.