Don't be too hard on yourself. We all make mistakes. Except me, of course. I'm inflammable.
But grizz makes a good point about your insurance cover, and you should take note. It's a virtually universal principle that insurance will not cover pre-existing conditions. And of course he's right about the whole set-up you have over there as well. It's basically run by the corporates for the corporates, not for patients. They could care less about you, as long as their bottom line looks good. They get paid regardless of how well you come out of it.
Fact is, you don't have a health system. At best, it's a disease management system, and it's doubtful it can even aspire to that standard anymore. But hey, look on the bright side. At least you can get a lot of help/advice around forums like this one.