Health coverage after losing my job: marketplace or Medicaid? - first time posting

My family's coverage ended with the layoff and we have a prescription we cannot skip. I have read a lot of threads here and could not find my exact situation. 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 12 months ago, and it settled down once I kept a simple log of every call and form.