Hello, IBS is different for everyone.. Most people are worse in the morning.. I happen to be one of the lucky ones who has it in the morning and at night.. What are your symptoms?? Have you gone to a gastro yet?? If not that is a place to start.. They will do some testing to rule out other illness.. IBS is a diagnosis.. They need to rule out Chrons,IBD,ulcerative colitis and gallbladder issues.. You should do a food diary.. Alot of IBS'ers have issues with dairy.. Try to see what bothers you and iliminate it and see if you do better.. Hope you find a answer..