I became very sick about 5 months ago with an undiagnosed GI illness. Docs believe it was a food poisoning or virus.One of my symptoms - Diarrhea - has persisted. I have had all of the tests (at least once!) and the docs have just labled my problem as "post-infectious IBS". The past five months have been really awful, but now it is getting worse for the following reason. In the past month, my poor husband has been experiencing all sorts of stomach problems too - stomach aches and diarrhea. I am so worried that I have given it to him, yet I know IBS is not supposed to be contagious. Any ideas here???? What could this be?