if your stool is normal and not feeling weak or something could be just a reaction. if I was bleeding heavy or long period I would see a doctor. although last time i was bleeding (not heavy) they gave me SALOFALK which was doing more harm than good.
in my case was an colonic infection - they did not manage to discovered the pathogen - and it was gone after colonics, diet, broth, probiotics and krill oil. i believe a candida or clostridium or similar was there. now its better no bleeding :) it does not mean you have that.
do think maybe they are thinning your blood. stop them see if improves and try something else after several days. if not maybe seeing a doctor could be a good idea?