I'm new to this. I've had abdominal pain for about 10 years. I've experienced the severe pain others have described in the left lower quadrent. It has been bad enough to make me pass out, throw up, and consider suicide.I often have the gas problem, and have had constipation, but don't have a severe problem with either D or C.The pain seems to start around ovulation and stops a day or so before my period starts. I have suspected endometriosis in addition to IBS. Just wondering what other women's experiences have been with this. I've had a colonoscopy and CT scan recently and both looked fine. I'm going to see the GYN again and am at a point where I just want a laparoscopy to rule out or verify endometriosis. Then at least I can focus more on the IBS.