What's the treatment for IBS?

Irritable bowel synd. Answer depends upon whether you have constipation-predominant or diarrhea-predominant or mixed. Check out http://www.mayoclinic.org/diseases-conditions/irritable-bowel-syndrome/basics/definition/con-20024578, http://www.webmd.com/ibs/ & http://emedicine.medscape.com/article/180389-overview for more info & treatment options.
Various ... Once a diagnosis of IBS has been made with your Dr there is a range of treatment options. General advice includes regular meals, plenty of fluid, consider 'mindful eating' - taking time to stop, prepare for meals, to eat, chew, notice, enjoy. You can modify your fibre intake. You may consider exploring the option of low FODMAP foods. Medication can be used to manage severe symptoms. http://patient.info/health/irritable-bowel-syndrome-leaflet.
R/O IBS. IBS is a diagnosis of exclusion. IUC/CROHNS DZ/IBD is inflammation usually DX by BX IBS SX can be managed .You need a full exam and blood work. Especially screen for H pylori . Also stool screen x 3 for occult blood /parasite/ &colonoscopy./EGD While you are getting these items checked out you should stick to a gluten free diet . Ie gutbliss.com and Wholeapproach.TX: PROBIOTICS/LEVSIN/BENTYL.