Pain with urination, felt over the bladder (in the pelvis, the lower part of the abdomen just above the pubic bone), is known as dysuria and can be a symptom of urinary tract infection of the bladder, known as cystitis.
You may have only bladder discomfort as a symptom without urination frequency and urgency.
Another possible cause for your pain is interstitial cystitis or painful bladder syndrome.