Acute renal failure is not necessarily the same thing as chronic. What do your doctors say? Ask all the questions you can think of -- keep a list to remind yourself, as docors are often in such a hurry. www.kidneyschool.org has great resources for learning more about such conditions. Knowledge is power!
I have been through chronic kidney disease (I was at a GFR of 31 when diagnosed) leading to end stage renal failure, and while dialysis is no one's idea of fun, it can keep one going a long time. I was hugely lucky and received a kidney/pancreas transplant a year ago, and am doing fine. Normal is always a moving target for any diabetic -- don't let the fear conquer you! Sending positive thoughts your way.