There are few possibilities for these symptoms. Firstly , the cause can be -Inflammation or infection of epididymitis . Secondly the cause may be Stone in lower ureter, this can can cause testicular pain and burning urination. It is important to rule out STD . As such you need some tests- Urine examination, Ultrasound of lower abdomen, X-ray pelvis. So my opinion is that you should see doctor for evaluation and management. In the mean time take plenty of fluids, take motrin.