thank for choosing HCM, I can understand your concern, see the IBS
is not concret diagnosis or having some exact pathophysiology behind it, it is greatly related with your stress
level, if you keep your anxiety
level as low as you can then you wont be able to feel it, on other hand blood stain stool is indication of so many things right from the fissure to intestinal colitis
and need to be ruled out, in most of the male patients it is fissures and it will come around with proper care and diet, better to consult some gastroenterologist, have a good day.