I am bloated all the time. I take fiber every day. Exercise and try to eat right, although I love salads and they are not good for us. I have IBS-C, diagnosed three years ago during my last colonoscopy. My GI wants to do another colonscopy, is that a total waste of time. The IBS-C was under control for 8 months. For the past year it acts up for a few months and then it get better for a few months..on and off. Should I consider another colonoscopy?