Despite many members of HN being wealthy and/or well connected there are just as many of us that struggle to pay rent let alone for medical expenses. At the same time I and I'm sure others appreciate that this kind of thing is a very lonely and depressing experience with many dark thoughts. So here is a bro shoulder squeeze. Any of us could be in the same situation as you, it is a fact. Good luck man.
Aside:
I think it would be nice if us geeks/hackers had a healthcare plan for our community. A HN healthcare fund that both covered the basics in different countries and also pulled together contacts and information about new treatments for illness/disease, some holistic approach to be intelligently hitting the 'big killers' that are likely to strike.
If you think about it, many of the things likely to 'whack' us are going to be similar due to lifestyle. Overweight, back problems just as a typical example. If somebody out in SV thinks it a good idea then mention it to PG. Then ycombinator could not just be a incubator, but take us from cradle to grave! :)