irritated bowel?

I am a four-year survivor...new to this board. Has anyone experienced a renewed irritation of the colon? Seems like I have irritable bowel syndrome lately. I take daily Immodium which worked up until lately, and now I just feel "crampy" after eating, etc. All my scans and counts have been good. Also I was reading about citrus and fruit on another message....that's impossible for me. I'm lactose intolerant and can't eat much fruit or veggies, all the stuff that's sposed to be good for you. any suggestions or comments would be appreciated.