I am undiagnosed too but had inflamation in my ileum 3 yrs. ago. My Dr. said it could be because I took advil for so long. But I still get tummy aches and diarhea alot and don't feel good alot. I get so tired too and fall asleep in the afternoon and could sleep for hours. I never want to get up. I do take vitamins. My frined said to take b12 and something else for IBD. Can't remember.