Hi,I have IBS-C and I am not sure if this is acting up. I take Zelnorm and since Feb. I have had bad pains lower left side. I thought it was a kidney stone cuz I get those too and I do have 4 but the dr. said they are imbedded and shoudnt be causing pain. The pain started in my back left side and is now more lower left. My IBS never gave me a back ach but I guess there is always a first time.Now, the pain though is pretty much lower left side. I wish I know what was going on. The last time it felt like this I did have my ovary out on that side and since I don't have an ovary there .I had a huge tumor that wasn't cancer. I don't have a clue.Thanks for listening. Polly