C.L.
My IBS was not acute and not officially diagnosed until after my pregnancies. However, looking back it had started before then and gradually got a little worse with each pregnancy. However, I am now able to control my symptoms with diet and exercise and rarely need my meds, other than Citrucel. It took months, even years, of experimenting with foods to determine my triggers. Have you met with a nutritionist? Kept a food diary? Those things might be helpful
I also agree with some of the other posters that "IBS" is usually a diagnosis of elimination (they've eliminated other causes) or don't really know what is wrong. It is often misdiagnosed. Do you feel pretty comfortable that all other causes were ruled out? In my case, I had fairly extensive testing and feel pretty comfortable with the IBS diagnosis. I also have some family history and other minor conditions that are consistent with IBS.