There are only a few companies that will consider anyone with a history of a stroke and they all require a waiting period of a minimum of 12 months.
Complicating matters is your diagnosis of diabetes. I'm not sure if any company will offer you coverage.
A combination of a stroke and diabetes, (no matter how recovered you are from the stroke and no matter how well controlled your diabetes is) is usually an automatic decline.
I suggest you contact an independent broker, one who represents a number of carriers to find out your insurability.
You can find an agent/broker in your state by going to the American Association of LTC insurance website.www.AALTCI.org