Limited Time Medical Insurance No Medical Insurance?

No medical insurance? - limited time medical insurance

I had pain in right lower abdomen in January for 7 days. I went to the emergency room because they have no health insurance, and someone told me that they are good to work with payment. I recently received a bill of more than 5 billion U.S. dollars in the mail. I called and told me about the document by e-mail request for payment, but can not configure it, over the phone. My question is: how well hospitals (I am in California) to share with people who are not insured to work and have low income? I am a student in full-time study for this could be charged, hard-to ..