The pain on the right side when urinating may be caused by ureteral stones, prostatitis, but also can not rule out cystitis and other factors related. 1. Ureteral stones: Ureteral stones belong to the upper urinary tract stones, the vast majority of the stones from the kidneys into the ureter, and stayed in the narrow part of the ureter, will lead to painful urination or frequent urination, in the process of urination will cause damage to the ureteral mucosa, will also be accompanied by abdominal pain and blood in the urine and other symptoms. You can take stone pellets as prescribed by the doctor or do the treatment through extracorporeal shock wave lithotripsy technology. 2. Prostatitis: Prostatitis is caused by pathogenic bacterial infections or certain non-infectious factors, in the onset of the disease will lead to pain and discomfort in the pelvic region, accompanied by urinary abnormalities and tingling in the urine, and pain in the prostate tissues during urination, resulting in the symptom of right sided hidden pain. You can take oral metronidazole tablets and amoxicillin capsules as prescribed by your doctor. 3. Cystitis: Cystitis is an infection of the bladder mucosa, often accompanied by inflammation of the urethra, which can lead to frequent urination and urinary urgency, accompanied by difficulty in urination and discomfort in the lower abdomen, in the process of urination due to the inability of urine to be discharged normally, which can lead to tingling in the bladder tissues, and the whole of the lower abdomen will have a hidden pain. Oral azithromycin tablets and roxithromycin capsules can be prescribed to do the treatment. There may be other reasons for the pain on the right side when urinating, so it is recommended to go to the hospital for examination and treatment.