Hi everyone i'm new to the board and I believe i've come down with IBS-D.I went to my doctor about 3 weeks ago complaining of D (with blood) and he told me to get a stool sample, which came back negative (which was strange, because when I produced the sample there was clearly blood in it), so he put me on Apo Trimebutine...which I have been taking for the last week.I don't think the medication is working as I still have D about 2-3 hours after a meal..is this normal? Does it usually take longer for this medication to begin to alleviate symptoms?I'm wondering if I should go back to my doctor right away because it seems I am getting worse (blood is still there)..or do I wait it out to see if the medication eventually kicks in?Thanks for your help.