Been there, several times. I had IBS like symptoms (weird stools, pain, gas), twinges of pelvic pain, and just knew it was OC. Went to the dr for a ultrasound and it was clear. I did that two years in a row. Had the blood test for the cancer marker and it was normal. I finally figured out it was in fact IBS. It sucks. I know. I am only 33. I am on breast cancer now. I found a small something that is different than the other tissue. No history of BC and the characteristics of the lump don't point to BC. Still scared out of my mind.