Discomfort in different places of stomac

My son is 3.10 years old. From 7-8 days he is feeling discomfort in his stomach. I given him enterogermina 3 days 2 times a day. But not reduced. Now he is feeling this discomfort in different places like middle of the chest, left side of the chest, right side of the stomach under the ribs, up and down side of the naval area. This discomfort lasts for few seconds. In aday 9-10 times happens. From 3 - 4 days his motion is normal. His urine routine test report also normal. His pediatrician checked him and told that physically he has no problem. He given Drotin- ds 7.5ml, 2 times daily. But after giving this medicine this problem increased. He does not have any other problems and is playful. What needs to do? Should I stop this medicine?