What are the classic symptoms of IBS? I'm not sure if DS (6yo) has IBS or an allergy or intollerance. He eats a very healthy diet and never snacks between meals yet his tummy is massively bloated and he looks 9 months pregnant! His arms, legs etc are all normal size yet his tummy always looks bloated. His bowel movements have never been good, he goes about every 3-4 days but he has always been like this ever since a baby. He sometimes complains of tummy ache, but it never lasts long. I asked the doctor about this last year and she sent him for blood tests to test for allergies - wheat I think - but it all came back negative. I'm not sure what to do really? Is there medication for IBS? I've thought about cutting things out of his diet but I'm not sure where to start? And how long would I have to cut something out for before I knew it was or wasn't making a difference iykwim. Any advice appreciated please