How will the plan effect people who retire at 62?

I want to, almost have to, retire at 62 due to health problems. Have a pre-existing because of CAD. I know I won't be covered by Medicare until 65. I won't be getting enough social security and pension to be able to afford insurance. From what I hear I woud be made to get insurace at a price of $3600 a year. What's going to happen when that is unaffordable to me?