I Am Having Digestive Problems. My Symptoms Are Extreme Bloating,

I am having digestive problems. My symptoms are extreme bloating, feeling full too fast when eating, burping, maybe slight nausea if any. It is very uncomfortable, but not severe pain like I have had in the past. I have some heartburn, but not severe. I have already been diagnosed with IBS and have had my gallbladder removed years ago. I eat extremely healthy and can usually control the digestive issue by my diet and supplements. I was having this problem in March, and I put myself back on the Yeast and Mold elimination diet that my allergy doctor put me on in 2005. I also did yeast cleanses and increased my probiotics. I already follow the Mediteranian diet. I did get better when I did all that, but there was one weekend about a month ago that I ate some pizza and chocolate chip cookies. The following weekend I had a slight stomach virus and ate the stuff you eat when you have a stomach virus. After that I got back on my diet. The only thing I have done different is eat some Kashi bars and some Mi-del Ginger Snaps. I have been treated this as a yeast problem. I have had problems with yeast since my early 20's. Do you have any recommendations?