Starting last night i begain to have sudden and severe back pain. It is located on the left side, in the mid of my back. no recent trama to the back and about 4 days ago heavy lifting but was fine until last night. I am nauseaous. The pain is radiating from my back through to my left ribs and just below, between my left ribs and left hip. I don't have insurance or I would go to the doctor. I have no fever, and haven't since the pain started. I tried tylenol, heat, and then ice and none of it has worked. My urine is very light in color with no odor. I have been really bad about water drinking until recent and i am drinking between 64- 120 oz of water a day. I had a baby about 2 1/2 months ago and when they did the epidural there was a lot of problems with the nerves on that side of my back. i have been in 3 car accidents but the most recent was approx 8 months ago and was pretty minor, but i was jerked around quite a bit. all i know is that i am in a great deal of pain and dont know what to do. i was thinking maybe kidney stones, but my urine is normal. i dont know what to do.