Hi, Thanks for writing in. The symptoms of trouble urinating, burning sensation and extreme back pain can be seen in infections involving the kidneys and urinary bladder. It is important that you first get a urine routine and culture sensitivity tests done to know if there is any infection causing organism in your urine. If the fever gets worse and you feel sudden rise in body temperature then doing a blood culture test is also required. It is also possible that there is a stone in your kidneys, ureters or urinary bladder. This can be known only after doing an ultrasound scan. Other causes of your symptoms also need to be considered and this is to be discussed with your doctors. Meanwhile please continue to drink lots of water and fresh juices and visit washrooms regularly. Please do not hold urine for a long time.