A friend of mine just got blue cross blue shield individual coverage, and it's $170 a month with a $500 annual deductible (for a single person). You might try something like that for yourself and maybe kidcare (state sponsored health care) for your child.
But I know that most of my single parenthood, even those numbers would have been too much.
I had medicaid for the first year after dd2 was born, and then nothing for almost two years, and just got medicaid again (now that I'm pregnant, I qualify again). It's difficult, though, to not feel like you have something to fall back on!!