According to the symptoms you reported, you might be experiencing increased bowel movements and/or meteorism. Meteorism is presence of gasses in the bowels causing distension. The distension might be accompanied with pain. The increased bowel movements cause the food to pass the colon fast. Giving the fact that the colon is responsible for absorption of water, the shortened time leads to insufficient absorption and loose stool. You might reconsider if some type of food worsens the symptoms and then try to avoid it.