That... really, really sucks. Is it permanent? How is your heart? Congestive heart failure affects the lungs and kidneys, causing many of the same symptoms (just from looking it up.)
Did you had any bloodwork before you went to Cambodia/took a turn for the worse? My kidney numbers aren't great myself (I'm on 1200mg of lithium, rough on the kidneys, daily and have been for at least ten or fifteen years.)
How long will you be on dialysis? Is your other kidney still good? Or does failure tend to be bilateral?
Anyway, hang in there. You might be able to get on Medicare depending on some criteria. Obviously it wouldn't help overseas, but I think I saw that you're not currently insured at all?
This post is probably wholly inadequate, giving advice and talking about myself -- I'm not the best shoulder to cry on -- but I'll be thinking about you.