Hi all. I've had IBS since I was 17. Now, I'm 45 and still dealing with flare ups. I was in the ER and have had many tests for severe pain, nausea, gas, bloating, burping, pain under right rib and behind shoulder. All docs thought it was gallbladder but gallbladder tests all came out normal. I was severely dehdyrated and needed fluids and nausea meds. They sent me home with Bentyl. Still having problems after I eat, severe high gas pain, debilitating......terrible burping. Dr. wants me to have colonoscopy. I have severe phobia of vomiting, so I'm scared of prep. Talked him into dulcolax, miralax prep, but I'm still scared of cramping, nausea and feeling sick. I know people do well, but I'm a baby. On my last endoscopy last year, I wasn't knocked out enough and then they over-medicated me, and I was so sick. My last colonoscopy, I was so dehydrated and stomach pain from prep, I was hysterical. That was ten years ago, and I have to do it again. Any advice?