Why do I have dull abdominal pain and bloating after bowel movements?

Hi doctor,

I have had dull abdomen pain in the lower and lateral region for the past ten days. The minor but discomforting pain usually comes and goes mostly after bowel movements. I always have an urge to pass bowel, but there has been no change in my bowel pattern or frequency. I occasionally have burning in the lower and lateral sides of my abdomen and have constant bloating. The sonography test resulted in no internal organ problem. I have been on antibiotics for five days, and there were no results. When the pain is worse, I take Dicyclomine. My naval displacement was checked. Some doctors concluded that there was naval displacement, while others disagreed. I feel tightness and bloating in the large intestine. No medicine has helped resolve the symptoms. Please help.

Thank you.