What does it mean if my urine is brown to dark yellow? My feet are as cold as ice, but the rest of my body feels like it s burning up. I am getting massive headaches, and I am having periods of black outs lasting from 10 to 30 minutes. My urine has a foul odor, and it is becoming increasingly painful to urinate. I have stage 3 kidney disease, post liver transplant. I was put on Furosemide 20mg, then told i was in renal failure because of the medication. Suddenly the doctor backpacks and says my kidneys are fine despite the symptoms first listed. What is your opinion?