If you're paying, they can't come after you.
See if you can't negotiate the price downward--sometimes hospitals have multi-tiered pricing.
Check w/social service agencies to see if they will help you. St. Vincent de Paul is one that sometimes will help people out with bills.
Some light reading--seriously, take the time to click, you may find something helpful up in here:
http://bucks.blogs.nytimes.com/2012/03/14/for-uninsured-tips-in-seeking-to-reduce-a-medical-bill/
http://www.huffingtonpost.com/jason-alderman/what-happens-when-you-can_1_b_1702356.html
http://www.thequotehub.com/articles/ways-to-pay-your-medical-bills/
Good luck--try not to stress (easier said than done, I know).