I suffer from IBS-C. When I have to go, Its usually after my body has expelled alot of gas. Does anyone else have this problem? Its hard to explain. I guess then I usually do not know when I really have to go or not. Especially when I am working. I don't expel the gas. However when I get home and can let it rip (sorry, did not mean to be gross) I feel constipated. I am one who suffers from alot of gas.