I am 25 years old male. Almost 16 days ago, I felt severe pain in my left abdominal. It lasted for more than 2 hours until doctor gave me a pain killer. Then, I got some tests including X-ray, blood and Ultrasonograph. The tests showed blood in urine and increase in total WBC count. Nothing came in X-ray. So I was told that I had severe ureter infection. He prescribed me to take 750mg (generic name: Cefuroxime) IV after every 10 hours. So I started taking it. I was also told to go for a CT scan. I had urine culture too. It showed “NO Growth”. Finally after 3days, the doctor said that I had a 3.2mm stone in my lower left ureter, close to the opening of the of the ureter. He give me one week of time to wait and continue the medicine. This time he changed the 750mg IV, and prescribed 500mg tablet. I already took shots of the IV for eight times. He also added a medicine to help the stone pass out naturaly(can’t remember the name.) But soon after it, I started feeling fever. It stays most of the time, especially at evening and night ranging from 101-102 degree. It’s been 10days I have been suffering from this evening-night fever. I am not having any abdominal, back pain or urine problem. Recently I visited another doctor. He asked for urine test and widal test. That came clean. Then he prescribed me these medicines (generic names): Omeprazole 20mg, Azithromycin 500mg,Tiemonium Methylsulphate INN, and Paracetamol 500mg. So I have started taking these medicines again. The new doctor asked for a new ultrasono. So I did that again from another hospital. This time the stone showed up at different size-7mm. Moreover after checking it the doctor suspected that it could be a calcium deposit since it didn’t show some kinda shadow in the untrasono. So he told me to continue with his medicine for one more week. Then he will decide what to do. The thing is I am not having any regular ureteral stone symtomps so far except the day I had the pain. But I have this fever that is bothering me a lot. I am feeling so helpless and worried. Is it for any stone? Or for taking too much high power antibiotics? Or for infection? But the second urine test came pretty much clean. What about the stone and its size? Please help me. What should I do?