I have both IBS and IBD.
My IBS is treated with a low-dose anti-depressant, (Doc told me it stops the pain receptors in my spine) which stops my left-sided pain and rumbles all over my lower abdomen. When I start having that pain again, my GI ups the dosage a little bit and the pain goes away. Right now, I'm in a Crohn's flare, my pain is right-sided and the pain feels different. (I have a stricture of the terminal Ileum). So you can definitely have both.
:thumleft: