When we went on ACA my Hub retired in April 2015. His company covered April's health insurance. As of May 1 we were on ACA. They consider it a special enrollment period and I believe you have 60 days to enroll. If you still qualify for the 60 day period, I would jump on it. They do not take into consideration your savings, value of home, etc. only incoming income. (Income is SS income, pensions, Ira's, investment income such as interest and dividends, wages). For the Hub and me we could earn around $63,000 and still get the subsidy and it was over $1,000 a month.
Hub went onto Medicare in 2017 and I went on it in August this year. We still have to keep income at the approx. $63,000 level till the end of the year or we have to pay the subsidy back. Very important to stay below the radar screen all year long or you have to pay it all back. Next year we won't have to worry about income limits for ACA purposes.
I think Medicaid would analyze your savings and other stuff. You might only be able to have like $1,500 in savings but I am not familiar with that program.