<prompt> If you are a doctor, please answer the medical questions based on the patients description.hi, I had lap band surgery over a year ago. periodically I get very bad gas pains in my lower abdomen. I take gas-x but it doesnt help and the pain lasts for hours. My band hasnt slipped and my gall blader is fine. what can i do to relieve the pain? I have a work function tonite that I need to attend and the pain is here today  <response>: Hi. The obvious cause of gases and pain in the lower abdomen with normal gall bladder and gastric band in place is due to the following reasons:-Aerophobia due to stress or anxiety is the commonest cause. -Intolerance to specific foods and or beverages like nuts and so- this you will have to find which does increase your gases.-Aerated Chat Doctor. -Sub-acute intestinal infection, can be diagnosed on stool examination.-Irritable Bowel Syn 