I have had the following symptoms for the past 6 weeks. Lower abdominal pain in the left side, constipation (I have a bowel movement everyday but it is hard to pass) bowl spasms, feeling full of gas, if I could expel the gas, I feel better. For the most part, I can't expel the gas. I have no blood in my stools, occasionally stringy mucus. I went to two doctors who both told me the same thing. I have IBS. One of the doctors prescribed an antispasm drug (which didn't really help). I have tried fiber which seems to make me more bloated. I recently insisted on going to a gastrologist. He told me that if I was 25 he would send me home because he thinks I have IBS but because I am 41 he said it is better to schedule a colonoscopy. My question is this. Does IBS normally hurt so bad?? I am a nervous wreck thinking I have something terribly wrong.I got to bed at night and sleep fine. I wake up in the morning feeling okay and then after I start eating lunch and by suppertime I am hurting. Anyone help me?