Flank pain, side ribs pain with bothside

I done my usg test and kidney urine culture test and RFT test and a more urine test do from parasitology but no bacteria found in my urine.   its all normal but when i wake up in morning i get dull pain near flank side and near bladder area and some different types of smell coming from my urine. I feel weakness when i wake up and all day after drinking a lots of water my mouth is dry. After eating food i feel very well. sometimes my legs are paining(cramps). I do not understand what is goingon nobody find the main reason of my health problems. Iam non-alcoholic, non- tobacco person i did not take that type of items. But iam confusing did i have a dehydration problem. Whenever i drink water my mouth was dry i drink 4-5 litres in a day. But i did not understand the main reason. I feel very ill in morning. Iam attaching my reports. Kindly provide me a best suggestions.