I have pressure in my lower abdomen about three inch below my belly button. This is constant dull pressure, does not change with urinating.?

Doctor can evaluate. There are many things in the abdomen. A primary care doctor can evaluate to see if it is constipation, another bowel problem, a liver or gall bladder problem, a kidney problem, or some other abdominal issue. The doctor may order some blood and urine tests, and may order an abdominal scan such as an ultrasound scan to look inside the belly.