Health coverage after losing my job: marketplace or Medicaid? - 3 months and counting

My employer coverage ended at the end of the month and I am trying to work out what to do as a bank teller. Any experience at all would help. I think my income this year might qualify for a subsidy. How fast did coverage start?

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