Hello @junita and welcome to Mayo Clinic Connect.

I am sorry to hear about your 20 years of dealing with IBS. That is certainly a difficult disorder to live with, isn't it? If you've had IBS for that long of a time your GI doctor has probably already informed you of the Fodmap eating plan. If not, here is a discussion that I started about this eating plan about a month ago. It has helped me a great deal, https://connect.mayoclinic.org/discussion/fodmap-eating-plan/.

Here is a video from a registered dietician at Mayo Clinic regarding this eating plan, https://connect.mayoclinic.org/page/gastroenterology-and-gi-surgery/newsfeed-post/what-exactly-is-the-fodmap-diet-dr-wang-explains/

As my main symptom was abdominal pain and discomfort, I'm wondering what your main symptoms are. If you are comfortable sharing more, junita, is diarrhea your most difficult symptom or are there other symptoms as well?